Easy BACnetGas-fired steam humidifier · BACnet points list
Neptronic SKG4 BACnet points list
Updated 28 October 2026
Short answer
The SKG4 is a natural gas or propane fired steam humidifier with BACnet MS/TP and BACnet IP on its controller. The object list covers system control sources and network inputs plus per-module (1-4) state, request, alarm, burner, service and water level objects.
This page lists 303 BACnet objects for the Neptronic SKG4 — 175 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Neptronic’s own free documentation, linked below.
- Manufacturer
- Neptronic
- Model
- SKG4
- Equipment
- Gas-fired steam humidifier
- Equipment type
- Humidifiers
- BACnet objects
- 303 (175 writable)
- Transport
- BACnet MS/TP, BACnet IP
- Firmware
- Not stated
- Default device instance
- 153000 + MAC address (153001 by default)
- Also known as
- SKG4 gas fired humidifier, SKG4-N, SKG4-E, SKG4 BACnet
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BMS integration notes: Neptronic SKG4
Integration in brief
Select a network control profile (MSV 33) or demand source, write the demand to AV 141 or a room RH reading to AV 109 with setpoint AV 110, and switch the system with MSV 60. Monitor per-module state and alarm MSVs plus BV 104 for network control health.
Minimum points to map
The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.
| Object | Name | Why | Access |
|---|---|---|---|
| MV 60 | System Power State | System on/off from the BMS | Write |
| MV 33 | Control Profile | Control profile: choose a Network profile | Write |
| AV 141 | Humidity Control Network Demand | Network humidity demand written by the BMS | Command |
| AV 110 | Room RH Setpoint | Occupied room RH setpoint (internal control) | Write |
| AV 109 | Room RH Network Reading | Network room RH reading for internal control | Command |
| MV 63 | Module 1 State | Module 1 operating state | Read |
| AV 148 | System Power Output | Actual output of the whole system % | Read |
| MV 65 | Module 1 Alarm | Module 1 active alarm (1 = Normal) | Read |
| BV 104 | Network Control State | 1 = fault: network control lost (AV 248 timeout) | Write |
Enable & remote start
MSV 60 System Power State is writable (1 = Off, 2 = On). The control source follows MSV 33 Control Profile (ExternNetwork / InternNetwork for BMS control) or the individual source MSVs with the Custom profile.
Heartbeat & communication loss
AV 248 Network Timeout (1-900 s) sets how long the humidifier tolerates loss of BACnet control communication before stopping; BV 104 Network Control State reports 1 = Fault.
Sensors & values from the BMS
With the room RH source on Network write room RH to AV 109 and setpoints to AV 110-112 (occupied/unoccupied/vacant); write the supply high limit reading to AV 125 and setpoint AV 126. A direct network demand goes to AV 141 and a network high limit to AV 142.
Network setup
- MS/TP MAC defaults to 1 (000-254; 128-254 are non-token-passing slaves); baud rate auto-detects (Auto, 9600, 19200, 38400, 76800); Max_Master 127.
- Device instance defaults to 153000 + MAC (153001 out of the box) and can be changed from the menu or by writing Device Object_Identifier.
- BACnet IP uses UDP 47808 (0xBAC0) by default.
- Network/communication settings are in the controller's Integration menu (password 5544); power-cycle after connecting to the network.
- Reinitialize Device (warm/cold reset) over BACnet uses the password 'nep'.
Watch out for
- MSV 'BACnet Server List Mode' chooses which objects are published (Integrator, Advanced, Factory); objects marked Advanced in the guide, such as the program objects, only show in Advanced mode.
- Writing Out_of_Service = True disconnects an object from its physical input so the Present_Value can be overwritten; remember to set it back.
- The unit signals alarms through object values only; it does not send BACnet event notifications, so poll or use COV.
- COV subscriptions are lost on a power cycle.
- Per-module request MSVs (64, 67, 70, 73) act on one module; MSV 61 acts on the whole system.
Neptronic SKG4 BACnet objects
Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AI | 2 | Supply RH Signal | Duct or supply high limit humidity analog input signal | V | Read | |
| AI | 3 | Room RH Signal | Room humidity analog input signal | V | Read | |
| AI | 4 | Control Signal | Current demand analog input signal | V | Read | |
| AO | 3 | Power Output Feedback Signal | Power output feedback signal | V | Read | |
| AV | 10 | MCU Load | Current microcontroller load | % | Read | |
| AV | 11 | Memory Load | Current memory load | % | Read | |
| AV | 37 | Water Level Replace Interval | Amount of time the humidifier may run using only the resistive water... | days | Write | |
| AV | 48 | Supply High Limit RH | Duct or supply high limit humidity analog input | %RH | Write | |
| AV | 49 | Supply High Limit RH Min | Minimum value of the duct or supply high limit humidity analog input | %RH | Write | |
| AV | 50 | Supply High Limit RH Max | Maximum value of the duct or supply high limit humidity analog input | %RH | Write | |
| AV | 51 | Supply High Limit RH Bias | Bias value of the duct or supply high limit humidity analog input | %RH | Write | |
| AV | 54 | Room RH | Room humidity reading | %RH | Write | |
| AV | 55 | Room RH Min | Minimum value of the room humidity analog input | %RH | Write | |
| AV | 56 | Room RH Max | Maximum value of the room humidity analog input | %RH | Write | |
| AV | 57 | Room RH Bias | Bias value of the room humidity analog input | %RH | Write | |
| AV | 60 | Control Input | Current control input reading | % | Write | |
| AV | 61 | Control Min | Minimum value of the control demand analog input | %RH | Write | |
| AV | 62 | Control Max | Maximum value of the control demand analog input | %RH | Write | |
| AV | 63 | Control Bias | Bias value of the control demand analog input | % | Write | |
| AV | 64 | Board Temperature | The board temperature | °F or °C | Write | |
| AV | 67 | Power Output Feedback Bias | Bias value for the power output feedback signal | V | Write | |
| AV | 68 | Power Output Feedback Min | Minimum value of the power output feedback signal | V | Write | |
| AV | 69 | Power Output Feedback Max | Maximum value of the current steam output feedback | V | Write | |
| AV | 70 | Power Output Feedback | Feedback value of the power output analog output | % | Command | |
| AV | 73 | Module 1 Water Level | Percentage of water remaining in the evaporation chamber | % | Read | |
| AV | 76 | Module 1 Water Probe Low Pos Reading | Low position value of the water level sensor of the first humidifier... | Read | ||
| AV | 77 | Module 1 Water Probe High Pos Reading | High position value of the water level sensor of the first humidifier... | Read | ||
| AV | 80 | Module 1 Water Probe Abs Low Pos Reading | Absolute low position value of the water level sensor of the first... | Read | ||
| AV | 81 | Module 1 Water Probe Abs High Pos Reading | Absolute high position value of the water level sensor of the first... | Read | ||
| AV | 82 | Module 2 Water Level | Percentage of water remaining in the evaporation chamber | % | Read | |
| AV | 85 | Module 2 Water Probe Low Pos Reading | Low position value of the water level sensor of the second humidifier... | Read | ||
| AV | 86 | Module 2 Water Probe High Pos Reading | High position value of the water level sensor of the second humidifier... | Read | ||
| AV | 89 | Module 2 Water Probe Abs Low Reading | Absolute low position value of the water level sensor of the second... | Read | ||
| AV | 90 | Module 2 Water Probe Abs High Pos Reading | Absolute high position value of the water level sensor of the second... | Read | ||
| AV | 91 | Module 3 Water Level | Percentage of water remaining in the evaporation chamber | % | Read | |
| AV | 94 | Module 3 Water Probe Low Pos Reading | Low position value of the water level sensor of the third humidifier... | Read | ||
| AV | 95 | Module 3 Water Probe High Pos Reading | High position value of the water level sensor of the third humidifier... | Read | ||
| AV | 98 | Module 3 Water Probe Abs Low Pos Reading | Absolute low position value of the water level sensor of the third... | Read | ||
| AV | 99 | Module 3 Water Probe Abs High Pos Reading | Absolute high position value of the water level sensor of the third... | Read | ||
| AV | 100 | Module 4 Water Level | Percentage of water remaining in the evaporation chamber | % | Read | |
| AV | 103 | Module 4 Water Probe Low Pos Reading | Low position value of the water level sensor of the fourth humidifier... | Read | ||
| AV | 104 | Module 4 Water Probe High Pos Reading | High position value of the water level sensor of the first humidifier... | Read | ||
| AV | 107 | Module 4 Water Probe Abs Low Pos Reading | Absolute low position value of the water level sensor of the first... | Read | ||
| AV | 108 | Module 4 Water Probe Abs High Pos Reading | Absolute high position value of the water level sensor of the first... | Read | ||
| AVmin | 109 | Room RH Network Reading | Room relative humidity reading received from the network | % | Command | |
| AVmin | 110 | Room RH Setpoint | Room relative humidity setpoint received from the network | %RH | Write | |
| AV | 111 | Room RH Unoccupied Setpoint | Room relative humidity reading received from the network during no occupancy state | %RH | Write | |
| AV | 112 | Room RH Vacant Setpoint | Room relative humidity reading received from the network during vacancy | %RH | Write | |
| AV | 113 | Room Demand Proportional Gain | Room demand proportional gain | Write | ||
| AV | 114 | Room Demand Integral Time | Room demand integral time | s | Write | |
| AV | 115 | Room Demand Derivative Time | Room demand derivative time | s | Write | |
| AV | 123 | Room Demand | Humidity demand within the room | % | Command | |
| AV | 125 | Supply High Limit Network Reading | Supply high limit reading received from the network | % | Command | |
| AV | 126 | Supply High Limit Setpoint | Supply high limit setpoint received from the network | %RH | Write | |
| AV | 129 | Supply High Limit Proportional Gain | Supply high limit demand proportional gain | Write | ||
| AV | 130 | Supply High Limit Integral Time | Supply high limit demand integral time | s | Write | |
| AV | 131 | Supply High Limit Derivative Time | Supply high limit demand derivative time | s | Write | |
| AV | 139 | Supply High Limit Demand | Supply high limit humidity demand value | % | Command | |
| AVmin | 141 | Humidity Control Network Demand | Humidity control demand received from the network | % | Command | |
| AV | 142 | Humidity Control Network High Limit | Humidity control high limit received from the network | % | Command | |
| AV | 146 | Humidity Demand | Current humidity demand | % | Read | |
| AVmin | 148 | System Power Output | Measured power output of the system as a percentage of the total... | % | Read | |
| AV | 150 | Module 1 Chimney Temp | Flue gas temperature value of the first humidifier module | °F or °C | Write | |
| AV | 151 | Module 1 Water Temp | Temperature of water in the evaporation chamber of the first humidifier module | °F or °C | Read | |
| AV | 152 | Module 1 Water Frequency | Input frequency of the water level sensor of the first humidifier module | Write | ||
| AV | 154 | Module 1 Ambient Temp | Temperature inside of the weather proof enclosure of the first humidifier module | °F or °C | Write | |
| AV | 155 | Module 1 Fan Feedback | Value from the burner fan feedback of the first humidifier module | Hz | Write | |
| AV | 156 | Module 1 Fan PWM | PWM control signal from the burner fan of the first humidifier module | % | Read | |
| AV | 158 | Module 1 Run Time | Total runtime of the first humidifier module | h | Read | |
| AV | 159 | Module 1 Service On Time | Operating time of the first humidifier module, since the last servicing | h | Read | |
| AV | 160 | Module 1 Service Run Time | Runtime of the first humidifier module, since the last servicing | h | Read | |
| AV | 161 | Module 1 On Time | Total operating time for the first humidifier module | h | Read | |
| AV | 162 | Module 1 Demand | Measured humidity demand of the first humidifier module | % | Command | |
| AV | 166 | Module 1 Max Steam Output | Maximum steam output of the first modulating humidifier relative to its total... | % | Write | |
| AV | 170 | Module 2 Chimney Temp | Flue gas temperature value of the second humidifier module | °F or °C | Write | |
| AV | 171 | Module 2 Water Temp | Temperature of water in the evaporation chamber of the second humidifier module | °F or °C | Read | |
| AV | 172 | Module 2 Water Frequency | Input frequency of the water level sensor of the second humidifier module | Write | ||
| AV | 174 | Module 2 Ambient Temp | Temperature inside of the weather proof enclosure of the second humidifier module | °F or °C | Write | |
| AV | 175 | Module 2 Fan Feedback | Value from the burner fan feedback of the second humidifier module | Hz | Write | |
| AV | 176 | Module 2 Fan PWM | PWM control signal from the burner fan of the second humidifier module | % | Read | |
| AV | 178 | Module 2 Run Time | Total runtime of the second humidifier module | h | Read | |
| AV | 179 | Module 2 Service On Time | Operating time of the second humidifier module, since the last servicing | h | Read | |
| AV | 180 | Module 2 Service Run Time | Runtime of the second humidifier module, since the last servicing | h | Read | |
| AV | 181 | Module 2 On Time | Total operating time for the second humidifier module | h | Read | |
| AV | 182 | Module 2 Demand | Measured humidity demand of the second humidifier module | % | Command | |
| AV | 186 | Module 2 Max Steam Output | Maximum steam output of the second modulating humidifier relative to its total... | % | Write | |
| AV | 190 | Module 3 Chimney Temp | Flue gas temperature value of the third humidifier module | °F or °C | Write | |
| AV | 191 | Module 3 Water Temp | Temperature of water in the evaporation chamber of the third humidifier module | °F or °C | Read | |
| AV | 192 | Module 3 Water Frequency | Input frequency of the water level sensor of the third humidifier module | Write | ||
| AV | 194 | Module 3 Ambient Temp | Temperature inside of the weather proof enclosure of the third humidifier module | °F or °C | Write | |
| AV | 195 | Module 3 Fan Feedback | Value from the burner fan feedback of the third humidifier module | Hz | Write | |
| AV | 196 | Module 3 Fan PWM | PWM control signal from the burner fan of the third humidifier module | % | Read | |
| AV | 198 | Module 3 Run Time | Total runtime of the third humidifier module | h | Read | |
| AV | 199 | Module 3 Service On Time | Operating time of the third humidifier module, since the last servicing | h | Read | |
| AV | 200 | Module 3 Service Run Time | Runtime of the third humidifier module, since the last servicing | h | Read | |
| AV | 201 | Module 3 On Time | Total operating time for the third humidifier module | h | Read | |
| AV | 202 | Module 3 Demand | Measured humidity demand of the third humidifier module | % | Command | |
| AV | 206 | Module 3 Max Steam Output | Maximum steam output of the third modulating humidifier relative to its total... | % | Write | |
| AV | 210 | Module 4 Chimney Temp | Flue gas temperature value of the fourth humidifier module | °F or °C | Write | |
| AV | 211 | Module 4 Water Temp | Temperature of water in the evaporation chamber of the fourth humidifier module | °F or °C | Read | |
| AV | 212 | Module 4 Water Frequency | Input frequency of the water level sensor of the fourth humidifier module | Write | ||
| AV | 214 | Module 4 Ambient Temp | Temperature inside of the weather proof enclosure of the fourth humidifier module | °F or °C | Write | |
| AV | 215 | Module 4 Fan Feedback | Value from the burner fan feedback of the fourth humidifier module | Hz | Write | |
| AV | 216 | Module 4 Fan PWM | PWM control signal from the burner fan of the fourth humidifier module | % | Read | |
| AV | 218 | Module 4 Run Time | Total runtime of the fourth humidifier module | h | Read | |
| AV | 219 | Module 4 Service On Time | Operating time of the fourth humidifier module, since the last servicing | h | Read | |
| AV | 220 | Module 4 Service Run Time | Runtime of the fourth humidifier module, since the last servicing | h | Read | |
| AV | 221 | Module 4 On Time | Total operating time for the fourth humidifier module | h | Read | |
| AV | 222 | Module 4 Demand | Measured humidity demand of the fourth humidifier module | % | Command | |
| AV | 226 | Module 4 Max Steam Output | Maximum steam output of the fourth modulating humidifier relative to its total... | % | Write | |
| AV | 231 | Boiler Blowdown Rate | Rate of boiler blowdown or water dilution in order to minimize water... | % | Write | |
| AV | 234 | Boiler Drain Interval | Drain cycle | h | Write | |
| AV | 235 | Boiler Idle Temperature Setpoint | Idle temperature setpoint for the evaporation chamber when there is no demand | °F or °C | Write | |
| AV | 236 | Boiler Idle Time Drain | Amount of time the humidifier can remain in standby mode until an... | h | Write | |
| AV | 241 | Boiler Service Interval | Time of operation before the humidifier calls for servicing | h | Write | |
| AV | 248 | Network Timeout | Amount of time the humidifier may attempt to connect to the BACnet... | s | Write | |
| AV | 254 | Boiler Idle Tank Rinse Interval | Amount of time the humidifier stays in “Idle” or “Off” mode, before... | days | Write | |
| AV | 256 | Boiler Drain Volume | Volume of water that is drained from the chamber, relative to the... | % | Write | |
| AV | 270 | Humidity Demand Low Dead Band | Lower limit deadband for the humidity demand | %RH | Write | |
| AV | 273 | Module 1 Ignition Count | Number of times that the first humidifier module has completed an ignition... | Write | ||
| AV | 274 | Module 2 Ignition Count | Number of times that the second humidifier module has completed an ignition... | Write | ||
| AV | 275 | Module 3 Ignition Count | Number of times that the third humidifier module has completed an ignition... | Write | ||
| AV | 276 | Module 4 Ignition Count | Number of times that the fourth humidifier module has completed an ignition... | Write | ||
| AV | 281 | HRL Temperature | Room temperature measured by the HRL24 controller | °F or °C | Command | |
| AV | 282 | HRL Humidity | Room humidity measured by the HRL24 controller | %RH | Command | |
| AV | 285 | Runtime | The number of seconds that the system has been powered on | s | Command | |
| AV | 286 | HALTicks | Halticks | s | Read | |
| AV | 291 | Room Demand Proportional Band | Room demand proportional band | % | Write | |
| AV | 292 | Supply High Limit Proportional Band | Supply high limit proportional band | % | Write | |
| AV | 303 | Module 1 Water Temperature Offset | Set the temperature offset for the first evaporation chamber water temperature value... | °F or °C | Write | |
| AV | 304 | Module 2 Water Temperature Offset | Set the temperature offset for the second evaporation chamber water temperature value... | °F or °C | Write | |
| AV | 305 | Module 3 Water Temperature Offset | Set the temperature offset for the third evaporation chamber water temperature value... | °F or °C | Write | |
| AV | 306 | Module 4 Water Temperature Offset | Set the temperature offset for the fourth evaporation chamber water temperature value... | °F or °C | Write | |
| AV | 309 | Modbus TCP IP Keep Alive Time Out | Amount of time the communication to the Modbus TCP/IP server stays open... | min | Write | |
| AV | 323 | Module 2 Manual Calibration Time | Amount of time that has been elapsed since the last manual calibration... | h | Read | |
| AV | 324 | Module 3 Manual Calibration Time | Amount of time that has been elapsed since the last manual calibration... | h | Read | |
| AV | 325 | Module 4 Manual Calibration Time | Amount of time that has been elapsed since the last manual calibration... | h | Read | |
| AV | 327 | Module 1 Manual Calibration Time | Amount of time that has been elapsed since the last manual calibration... | h | Read | |
| AV | 329 | HRL Temperature Bias | Bias value of the temperature measured on the HRL controller | °F or °C | Write | |
| AV | 330 | HRL Humidity Bias | Bias value of the humidity measured on the HRL controller | %RH | Write | |
| AV | 335 | Module 1 Clean Valve Delay | The total drain duration for which the clean valve of module 1... | % | Write | |
| AV | 336 | Module 2 Clean Valve Delay | The total drain duration for which the clean valve of module 2... | % | Write | |
| AV | 337 | Module 3 Clean Valve Delay | The total drain duration for which the clean valve of module 3... | % | Write | |
| AV | 338 | Module 4 Clean Valve Delay | The total drain duration for which the clean valve of module 4... | % | Write | |
| AV | 448 | Module 1 Heating Max Output | Maximum steam output of module 1 relative to its total capacity during... | % | Write | |
| AV | 449 | Module 2 Heating Max Output | Maximum steam output of the module 2 relative to its total capacity... | % | Write | |
| AV | 450 | Module 3 Heating Max Output | Maximum steam output of the module 3 relative to its total capacity... | % | Write | |
| AV | 451 | Module 4 Heating Max Output | Maximum steam output of module 4 relative to its total capacity during... | % | Write | |
| BI | 1 | Water Leak Detection | Whether a water leak has been detected | Read | 0=OK, 1=Leak | |
| BI | 5 | Binary External Demand | Whether there is currently a humidity demand, when an On/Off humidifier is... | Read | 0=0%, 1=100% | |
| BI | 6 | Interlock | Status of the interlock | Read | 0=Closed, 1=Open | |
| BI | 7 | Supply High Limit | Status of the high limit contact | Read | 0=Closed, 1=Open | |
| BI | 8 | Air Flow | Status of the airflow switch | Read | 0=Closed, 1=Open | |
| BI | 9 | RS485 Interface | Whether the RS485 interface is available or not | Read | 0=No, 1=Yes | |
| BI | 10 | Ethernet Interface | Whether the Ethernet interface is available or not | Read | 0=No, 1=Yes | |
| BO | 1 | Service Warning Relay | Service warning relay | Command | 0=Off, 1=On | |
| BO | 2 | Alarm Warning Relay | Alarm warning relay | Command | 0=Off, 1=On | |
| BO | 5 | Alarm LED | Alarm LED | Command | 0=Off, 1=On | |
| BO | 6 | Power LED | Power LED | Command | 0=Off, 1=On | |
| BO | 7 | Buzzer | Buzzer | Command | 0=Off, 1=On | |
| BV | 2 | Alarm Buzzer | Configuration value that enables or disables the alarm buzzer sound when there... | Write | 0=Normal, 1=Disabled | |
| BV | 33 | Module 1 Burner Inlet Pressure | Burner inlet air pressure switch of the first humidifier module | Write | 0=Normal, 1=Blocked | |
| BV | 34 | Module 1 Water Level Low | Resistive low water level sensor of the first humidifier module | Read | 0=Inactive, 1=Active | |
| BV | 35 | Module 1 Water Level High | Resistive high water level sensor of the first humidifier module | Read | 0=Inactive, 1=Active | |
| BV | 36 | Module 1 Foam Sensor | Whether foam has been detected within the first evaporation chamber | Read | 0=NoFoam, 1=Foam | |
| BV | 39 | Module 1 Gas Valve | Gas valve of the first humidifier module | Write | 0=Off, 1=On | |
| BV | 40 | Module 1 Tank Water Valve | Evaporation chamber water supply valve of the first humidifier module | Command | 0=Off, 1=On | |
| BV | 41 | Module 1 Water Level Valve | Water level sensor supply valve of the first humidifier module | Command | 0=Off, 1=On | |
| BV | 42 | Module 1 Drain Cooler Valve | Internal drain cooler valve of the first humidifier module | Command | 0=Off, 1=On | |
| BV | 43 | Module 1 Drain Pump | Drain pump of the first humidifier module | Command | 0=Off, 1=On | |
| BV | 45 | Module 1 Ignition Control | Ignition control module of the first humidifier module | Read | 0=Off, 1=On | |
| BV | 47 | Module 1 Alarm LED | Alarm LED of the first humidifier module | Command | 0=Off, 1=On | |
| BV | 48 | Module 2 Burner Inlet Pressure | Burner inlet air pressure switch of the second humidifier module | Write | 0=Normal, 1=Blocked | |
| BV | 49 | Module 2 Water Level Low | Resistive low water level sensor of the second humidifier module | Read | 0=Inactive, 1=Active | |
| BV | 50 | Module 2 Water Level High | Resistive high water level sensor of the second humidifier module | Read | 0=Inactive, 1=Active | |
| BV | 51 | Module 2 Foam Sensor | Whether foam has been detected within the second evaporation chamber | Read | 0=NoFoam, 1=Foam | |
| BV | 54 | Module 2 Gas Valve | Gas valve of the second humidifier module | Write | 0=Off, 1=On | |
| BV | 55 | Module 2 Tank Water Valve | Evaporation chamber water supply valve of the second humidifier module | Command | 0=Off, 1=On | |
| BV | 56 | Module 2 Water Level Valve | Water level sensor supply valve of the second humidifier module | Command | 0=Off, 1=On | |
| BV | 57 | Module 2 Drain Cooler Valve | Internal drain cooler valve of the second humidifier module | Command | 0=Off, 1=On | |
| BV | 58 | Module 2 Drain Pump | Drain pump of the second humidifier module | Command | 0=Off, 1=On | |
| BV | 59 | Boiler Line Rinse | Perform an automatic pipe line rinse cycle upon each start-up of the... | Write | 0=Off, 1=On | |
| BV | 60 | Module 2 Ignition Control | Ignition control module of the second humidifier module | Read | 0=Off, 1=On | |
| BV | 62 | Module 2 Alarm LED | Alarm LED of the second humidifier module | Command | 0=Off, 1=On | |
| BV | 63 | Module 3 Burner Inlet Pressure | Burner inlet air pressure switch of the third humidifier module | Write | 0=Normal, 1=Blocked | |
| BV | 64 | Module 3 Water Level Low | Resistive low water level sensor of the third humidifier module | Read | 0=Inactive, 1=Active | |
| BV | 65 | Module 3 Water Level High | Resistive high water level sensor of the third humidifier module | Read | 0=Inactive, 1=Active | |
| BV | 66 | Module 3 Foam Sensor | Whether foam has been detected within the third evaporation chamber | Read | 0=NoFoam, 1=Foam | |
| BV | 69 | Module 3 Gas Valve | Gas valve of the third humidifier module | Write | 0=Off, 1=On | |
| BV | 70 | Module 3 Tank Water Valve | Evaporation chamber water supply valve of the third humidifier module | Command | 0=Off, 1=On | |
| BV | 71 | Module 3 Water Level Valve | Water level sensor supply valve of the third humidifier module | Command | 0=Off, 1=On | |
| BV | 72 | Module 3 Drain Cooler Valve | Internal drain cooler valve of the third humidifier module | Command | 0=Off, 1=On | |
| BV | 73 | Module 3 Drain Pump | Drain pump of the third humidifier module | Command | 0=Off, 1=On | |
| BV | 75 | Module 3 Ignition Control | Ignition control module of the third humidifier module | Read | 0=Off, 1=On | |
| BV | 77 | Module 3 Alarm LED | Alarm LED of the third humidifier module | Command | 0=Off, 1=On | |
| BV | 78 | Module 4 Burner Inlet Pressure | Burner inlet air pressure switch of the third humidifier module | Write | 0=Normal, 1=Blocked | |
| BV | 79 | Module 4 Water Level Low | Resistive low water level sensor of the fourth humidifier module | Read | 0=Inactive, 1=Active | |
| BV | 80 | Module 4 Water Level High | Resistive high water level sensor of the fourth humidifier module | Read | 0=Inactive, 1=Active | |
| BV | 81 | Module 4 Foam Sensor | Whether foam has been detected within the fourth evaporation chamber | Read | 0=NoFoam, 1=Foam | |
| BV | 84 | Module 4 Gas Valve | Gas valve of the fourth humidifier module | Write | 0=Off, 1=On | |
| BV | 85 | Module 4 Tank Water Valve | Evaporation chamber water supply valve of the fourth humidifier module | Command | 0=Off, 1=On | |
| BV | 86 | Module 4 Water Level Valve | Water level sensor supply valve of the fourth humidifier module | Command | 0=Off, 1=On | |
| BV | 87 | Module 4 Drain Cooler Valve | Internal drain cooler valve of the fourth humidifier module | Command | 0=Off, 1=On | |
| BV | 88 | Module 4 Drain Pump | Drain pump of the fourth humidifier module | Command | 0=Off, 1=On | |
| BV | 90 | Module 4 Ignition Control | Ignition control module of the fourth humidifier module | Read | 0=Off, 1=On | |
| BV | 92 | Module 4 Alarm LED | Alarm LED of the fourth humidifier module | Command | 0=Off, 1=On | |
| BV | 94 | Boiler Service Operation | Enable the humidifier to continue producing steam, even when it is due... | Write | 0=Not Allowed, 1=Allowed | |
| BV | 95 | Module 1 Foam State | Whether the first humidifier module has currently detected foam or not | Read | 0=Ok, 1=Detected | |
| BV | 97 | Module 1 Service Due | Status value that indicates whether the first humidifier module is due for... | Read | 0=No, 1=Yes | |
| BV | 98 | Module 2 Service Due | Status value that indicates whether the second humidifier module is due for... | Read | 0=No, 1=Yes | |
| BV | 99 | Module 3 Service Due | Status value that indicates whether the third humidifier module is due for... | Read | 0=No, 1=Yes | |
| BV | 100 | Module 4 Service Due | Status value that indicates whether the fourth humidifier module is due for... | Read | 0=No, 1=Yes | |
| BVmin | 104 | Network Control State | State of the control communication between the device and the BACnet network | Write | 0=Normal, 1=Fault | |
| BV | 105 | Module 2 Foam State | Whether the second humidifier module has currently detected foam or not | Read | 0=Ok, 1=Detected | |
| BV | 106 | Module 3 Foam State | Whether the third humidifier module has currently detected foam or not | Read | 0=Ok, 1=Detected | |
| BV | 107 | Module 4 Foam State | Whether the fourth humidifier module has currently detected foam or not | Read | 0=Ok, 1=Detected | |
| BV | 109 | HRL Lock Setpoint | Whether the setpoint obtained from the HRL24 controller can be modified | Command | 0=Unlock, 1=Lock | |
| BV | 111 | Module 1 Drain Valve | Normally open drain valve of the first humidifier module | Command | 0=On, 1=Off | |
| BV | 112 | Module 2 Drain Valve | Normally open drain valve of the second humidifier module | Command | 0=On, 1=Off | |
| BV | 113 | Module 3 Drain Valve | Normally open drain valve of the third humidifier module | Command | 0=On, 1=Off | |
| BV | 114 | Module 4 Drain Valve | Normally open drain valve fourth humidifier module | Command | 0=On, 1=Off | |
| BV | 143 | Module 1 Manual Water Calibration State | That the water level sensor must be manually calibrated | Read | 0=Ok, 1=Required | |
| BV | 144 | Module 2 Manual Water Calibration State | That the water level sensor must be manually calibrated | Read | 0=Ok, 1=Required | |
| BV | 145 | Module 3 Manual Water Calibration State | That the water level sensor must be manually calibrated | Read | 0=Ok, 1=Required | |
| BV | 146 | Module 4 Manual Water Calibration State | That the water level sensor must be manually calibrated | Read | 0=Ok, 1=Required | |
| BV | 151 | Module1 AntiFreeze Warning | Status of the anti freeze warning indicating if the drain valve is... | Read | 0=Inactive, 1=Drain | |
| BV | 152 | Module2 AntiFreeze Warning | Status of the anti freeze warning indicating if the drain valve is... | Read | 0=Inactive, 1=Drain | |
| BV | 153 | Module3 AntiFreeze Warning | Status of the anti freeze warning indicating if the drain valve is... | Read | 0=Inactive, 1=Drain | |
| BV | 154 | Module4 AntiFreeze Warning | Status of the anti freeze warning indicating if the drain valve is... | Read | 0=Inactive, 1=Drain | |
| BV | 156 | Memory Status | Status of the NVM | Read | 0=Ok, 1=Fail | |
| CSV | 38 | EthernetMacAdd | MAC address of the Ethernet interface | Write | ||
| MV | 9 | BACnet Server List Mode | Category of BACnet objects to display | Write | 1=Integrator, 2=Advanced, 3=Factory | |
| MV | 10 | BACnet Server Units | Display units for the BACnet server | Write | 1=Metric, 2=Imperial | |
| MV | 26 | Supply RH Signal Type | Signal type for the duct or supply high limit humidity analog input | Write | 1=0-10Vdc, 2=2-10Vdc, 3=4-20mA, 4=0-20mA | |
| MV | 27 | Room RH Signal Type | Signal type for the room humidity analog input | Write | 1=0-10Vdc, 2=2-10Vdc, 3=4-20mA, 4=0-20mA | |
| MV | 28 | Control Signal Type | Signal type for the control demand analog input | Write | 1=0-10Vdc, 2=2-10mA, 3=4-30mA, 4=0-20mA | |
| MVmin | 33 | Control Profile | A preconfigured control mode profile for the modulating humidity demand | Write | 1=ExternAnalog, 2=ExternNetwork, 3=InternAnalog, 4=InternNetwork, 5=HRL, 6=Custom | |
| MV | 34 | Modulating High Limit Profile | A preconfigured control mode profile for the modulating high limit demand | Write | 1=Disabled, 2=ExternAnalog, 3=ExternNetwork, 4=InternAnalog, 5=InternNetwork, 6=Custom | |
| MV | 37 | Occupancy State | Occupancy state | Read | 1=Occupied, 2=Unoccupied, 3=Vacant, 4=Off | |
| MV | 56 | Humidity Control Cutout State | State of the safety control circuit and whether the circuit has been... | Read | 1=Off, 2=Normal, 3=LowLimit, 4=HighLimit, 5=AirFlow, 6=Interlock | |
| MVmin | 60 | System Power State | Whether the system is powered on or off | Write | 1=Off, 2=On | |
| MV | 61 | System Request | Perform one of the following actions for the system: reset service counters... | Write | 1=None, 2=Reset Alarms, 3=Drain, 4=Reset Counters, 5=Filling, 6=WaterCalib, 7=PurgeAir | |
| MVmin | 63 | Module 1 State | State of operation of the first humidifier module | Read | 1=Off, 2=Idle, 3=LineRinse, 4=TankRinse, 5=Filling, 6=Draining, 7=Heating, 8=Boiling, 9=Alarm, 10=PurgeAir | |
| MV | 64 | Module 1 Request | Perform one of the following actions for the first humidifier module: reset... | Write | 1=None, 2=Reset Alarms, 3=Drain, 4=Reset Counters, 5=Filling, 6=WaterCalib, 7=PurgeAir | |
| MVmin | 65 | Module 1 Alarm | Status of the first humidifier’s alarm | Read | 1=Normal, 2=FailedPump, 3=FillTimeout, 4=Blocked Piping, 5=HeatTimeout, 6=Overheat, 7=WaterLeak, 8=Service, 9=Reserved, 10=BurnerLocked, 11=FanDefect, 12=FailedComm, 13=ChimTempHi, 14=RefillTimeout, 15=FanBlocked, 16=SystBlck, 17=TankBlocked, 18=RefillDelay | |
| MV | 66 | Module 2 State | State of operation of the second humidifier module | Read | 1=Off, 2=Idle, 3=LineRinse, 4=TankRinse, 5=Filling, 6=Draining, 7=Heating, 8=Boiling, 9=Alarm, 10=PurgeAir | |
| MV | 67 | Module 2 Request | Perform one of the following actions for the second humidifier module: reset... | Write | 1=None, 2=Reset Alarms, 3=Drain, 4=Reset Counters, 5=Filling, 6=WaterCalib, 7=PurgeAir | |
| MV | 68 | Module 2 Alarm | Status of the second humidifier’s alarm | Read | 1=Normal, 2=FailedPump, 3=FillTimeout, 4=Blocked Piping, 5=HeatTimeout, 6=Overheat, 7=WaterLeak, 8=Service, 9=Reserved, 10=BurnerLocked, 11=FanDefect, 12=FailedComm, 13=ChimTempHi, 14=RefillTimeout, 15=FanBlocked, 16=SystBlck, 17=TankBlocked, 18=RefillDelay | |
| MV | 69 | Module 3 State | State of operation of the third humidifier module | Read | 1=Off, 2=Idle, 3=LineRinse, 4=TankRinse, 5=Filling, 6=Draining, 7=Heating, 8=Boiling, 9=Alarm, 10=PurgeAir | |
| MV | 70 | Module 3 Request | Perform one of the following actions for the third humidifier module: reset... | Write | 1=None, 2=Reset Alarms, 3=Drain, 4=Reset Counters, 5=Filling, 6=WaterCalib, 7=PurgeAir | |
| MV | 71 | Module 3 Alarm | Status of the third humidifier’s alarm | Read | 1=Normal, 2=FailedPump, 3=FillTimeout, 4=Blocked Piping, 5=HeatTimeout, 6=Overheat, 7=WaterLeak, 8=Service, 9=Reserved, 10=BurnerLocked, 11=FanDefect, 12=FailedComm, 13=ChimTempHi, 14=RefillTimeout, 15=FanBlocked, 16=SystBlck, 17=TankBlocked, 18=RefillDelay | |
| MV | 72 | Module 4 State | State of operation of the fourth humidifier module | Read | 1=Off, 2=Idle, 3=LineRinse, 4=TankRinse, 5=Filling, 6=Draining, 7=Heating, 8=Boiling, 9=Alarm, 10=PurgeAir | |
| MV | 73 | Module 4 Request | Perform one of the following actions for the fourth humidifier module: reset... | Write | 1=None, 2=Reset Alarms, 3=Drain, 4=Reset Counters, 5=Filling, 6=WaterCalib, 7=PurgeAir | |
| MV | 74 | Module 4 Alarm | Status of the fourth humidifier’s alarm | Read | 1=Normal, 2=FailedPump, 3=FillTimeout, 4=Blocked Piping, 5=HeatTimeout, 6=Overheat, 7=WaterLeak, 8=Service, 9=Reserved, 10=BurnerLocked, 11=FanDefect, 12=FailedComm, 13=ChimTempHi, 14=RefillTimeout, 15=FanBlocked, 16=SystBlck, 17=TankBlocked, 18=RefillDelay | |
| MV | 77 | Boiler Fill Mode | Water filling method for the fill valve: When set to OneShot, water... | Write | 1=OneShot, 2=Pulsed | |
| MV | 78 | SKG Configuration | This object id is used for internal communication between the modules | Read | 1=RetroInside, 2=RetroOutside, 3=NewInside, 4=NewOutside | |
| MV | 79 | Boiler Idle Tank Rinse Off | Whether to enable automatic rinse cycles while the humidifier is turned off... | Write | 1=Off, 2=On | |
| MV | 80 | Boiler Idle Tank Rinse On | Whether to enable automatic rinse cycles while the humidifier is turned on... | Write | 1=Off, 2=On | |
| MV | 93 | Water Probe 1 Auto Calib | Whether to enable or disable the automatic calibration of the water level... | Write | 1=Off, 2=On | |
| MV | 94 | Water Probe 2 Auto Calib | Whether to enable or disable the automatic calibration of the water level... | Write | 1=Off, 2=On | |
| MV | 95 | Water Probe 3 Auto Calib | Whether to enable or disable the automatic calibration of the water level... | Write | 1=Off, 2=On | |
| MV | 96 | Water Probe 4 Auto Calib | Whether to enable or disable the automatic calibration of the water level... | Write | 1=Off, 2=On | |
| MV | 99 | System Mode | Set under which system operation mode the different modules will operate | Write | 1=Parallel, 2=Sequential, 3=Hybrid | |
| MV | 104 | BACnet Server Language | BACnet server language | Write | 1=English, 2=French, 3=Spanish | |
| MV | 105 | SKG Configuration | This object id is used for internal communication between the modules | Read | 1=RetroInside, 2=RetroOutside, 3=NewInside, 4=NewOutside | |
| MV | 106 | SKG Configuration | This object id is used for internal communication between the modules | Read | 1=RetroInside, 2=RetroOutside, 3=NewInside, 4=NewOutside | |
| MV | 107 | SKG Configuration | This object id is used for internal communication between the modules | Read | 1=RetroInside, 2=RetroOutside, 3=NewInside, 4=NewOutside | |
| MV | 115 | Boiler Startup Tank Rinse | Whether to perform an automatic tank rinse cycle upon each start-up of... | Write | 1=Off, 2=On | |
| MV | 116 | Module 1 Water Level Probe Warning | Whether there is currently a warning message associated with the water level... | Read | 1=Ok, 2=Replace | |
| MV | 117 | Module 2 Water Level Probe Warning | Whether there is currently a warning message associated with the water level... | Read | 1=Ok, 2=Replace | |
| MV | 118 | Module 3 Water Level Probe Warning | Whether there is currently a warning message associated with the water level... | Read | 1=Ok, 2=Replace | |
| MV | 119 | Module 4 Water Level Probe Warning | Whether there is currently a warning message associated with the water level... | Read | 1=Ok, 2=Replace | |
| MV | 121 | Water Level 1 Probe Failure | Which one of the water level sensor’s probes that are currently not... | Read | 1=None, 2=Capacitive, 3=Resistive, 4=Both | |
| MV | 122 | Water Level 2 Probe Failure | Which one of the water level sensor’s probes that are currently not... | Read | 1=None, 2=Capacitive, 3=Resistive, 4=Both | |
| MV | 123 | Water Level 3 Probe Failure | Which one of the water level sensor’s probes that are currently not... | Read | 1=None, 2=Capacitive, 3=Resistive, 4=Both | |
| MV | 124 | Water Level 4 Probe Failure | Which one of the water level sensor’s probes that are currently not... | Read | 1=None, 2=Capacitive, 3=Resistive, 4=Both | |
| MV | 125 | Module 1 Bacnet Units | BACnet units for module 1 | Read | 0=Metric, 1=Imperial | |
| MV | 126 | Module 2 Bacnet Units | BACnet units for module 2 | Read | 0=Metric, 1=Imperial | |
| MV | 127 | Module 3 Bacnet Units | BACnet units for module 3 (printed as NSV.127) | Read | 0=Metric, 1=Imperial | |
| MV | 128 | Module 4 Bacnet Units | BACnet units for module 4 | Read | 0=Metric, 1=Imperial | |
| MV | 129 | Module 1 Water Level Probe Alarm | Whether there is currently an alarm message to indicate that the water... | Read | 0=Ok, 1=Defect, 2=NoCalib | |
| MV | 130 | Module 2 Water Level Probe Alarm | Whether there is currently an alarm message to indicate that the water... | Read | 0=Ok, 1=Defect, 2=NoCalib | |
| MV | 131 | Module 3 Water Level Probe Alarm | Whether there is currently an alarm message to indicate that the water... | Read | 0=Ok, 1=Defect, 2=NoCalib | |
| MV | 132 | Module 4 Water Level Probe Alarm | Whether there is currently an alarm message to indicate that the water... | Read | 0=Ok, 1=Defect, 2=NoCalib | |
| MV | 135 | Update Process Status | Status of the Firmware update process | Read | 0=Ok, 1=CRC, 2=Device, 3=Failed | |
| Other | 1 | NSDF Core Program | NSDF Core Program | Write | ||
| Other | 2 | BACnet Server Program | BACnet Server Program | Write | ||
| Other | 3 | LCD_Display Program | LCD_Display Program | Write | ||
| Other | 4 | Modbus Server Program | Modbus Server Program | Write | ||
| Other | 5 | RMHI Program | RHMI Program | Write | ||
| Other | 6 | SKG Program | SKG Program | Write | ||
| Other | 7 | Universal Humidifier Manager Program | Universal Humidifier Manager Program | Write | ||
| Other | 8 | Universal User Control Program | Universal User Control Program | Write | ||
| Other | 9 | Web Server Program | Web Server Program | Write | ||
| Other | 10 | Water Level Probe Program | Water Level Probe Program | Write | ||
| Other | 16 | NSDF Database | Database Program | Write | ||
| FILE | 2 | UpdatePackageFile | Update Package file | Write | ||
| FILE | 4 | SysLogAlarm | System Log Alarm | Write | ||
| FILE | 9 | USB System Log File | USB System Log file | Write | ||
| FILE | 10 | USB System Alarm Log File | USB System Alarm Log file | Write | ||
| FILE | 16 | System Log File | System Log file | Write | ||
| SCH | 1 | Occupancy Schedule | Weekly occupancy schedule to specify which occupancy state is active during specific... | Write | ||
| SCH | 2 | Drain Schedule | Customized draining schedule with up to six events per day | Write |
No points match these filters.
Integration notes
- Objects and their writable properties are taken from the guide's 'W?' column; Present_Value writable means the BMS can change it.
- Units follow the BACnet Server Units setting (Metric or Imperial).
- Module 2-4 objects only apply to multi-module units.
- MSV 127 is printed as NSV.127 in the guide; it is a multi-state value.
Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the SKG4 and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.
Questions about the Neptronic SKG4
How many BACnet points does the Neptronic SKG4 have?
This list has 303 BACnet objects: 3 analog inputs, 1 analog output, 144 analog values, 7 binary inputs, 5 binary outputs, 70 binary values, 5 files, 2 schedules, 54 multi-state values, 1 characterstring value, 11 others. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Neptronic SKG4 BACnet points are writable?
175 of the 303 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done.
Where is the official Neptronic SKG4 BACnet documentation?
The source is SKG4 Gas Fired Humidifier BACnet Communication Module User Guide (SKG4-BACnet Guide-250609 (V2.06)), revision 2025-06-09, published free by Neptronic at https://www.neptronic.com/Humidifiers/PDF/2025/SKG4-BACnet%20Guide-250609%20(V2.06).pdf.
What are the minimum BACnet points to integrate the Neptronic SKG4?
Start with MV 60 System Power State (System on/off from the BMS); MV 33 Control Profile (Control profile: choose a Network profile); AV 141 Humidity Control Network Demand (Network humidity demand written by the BMS); AV 110 Room RH Setpoint (Occupied room RH setpoint (internal control)); AV 109 Room RH Network Reading (Network room RH reading for internal control); MV 63 Module 1 State (Module 1 operating state); AV 148 System Power Output (Actual output of the whole system %); MV 65 Module 1 Alarm (Module 1 active alarm (1 = Normal)); BV 104 Network Control State (1 = fault: network control lost (AV 248 timeout)).
How do I enable BMS control of the Neptronic SKG4?
MSV 60 System Power State is writable (1 = Off, 2 = On). The control source follows MSV 33 Control Profile (ExternNetwork / InternNetwork for BMS control) or the individual source MSVs with the Custom profile.
Does the Neptronic SKG4 need a BACnet heartbeat or have a communication timeout?
AV 248 Network Timeout (1-900 s) sets how long the humidifier tolerates loss of BACnet control communication before stopping; BV 104 Network Control State reports 1 = Fault.
Can the BMS supply sensor values to the Neptronic SKG4?
With the room RH source on Network write room RH to AV 109 and setpoints to AV 110-112 (occupied/unoccupied/vacant); write the supply high limit reading to AV 125 and setpoint AV 126. A direct network demand goes to AV 141 and a network high limit to AV 142.
How do I check these points on the real SKG4?
Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.
More Neptronic BACnet points lists
- Make-up air unit (electric heat)
Neptronic CMU Compact Make-up Air Unit
Neptronic CMU compact make-up air units with electric heating, EC fan, damper and optional exhaust fan outputs.
Also known as: CMU, Neptronic CMU - Fan coil unit controller
Neptronic EFCB Series Fan Coil Controller
Neptronic EFCB fan coil controllers (24, 120 or 240 Vac, 2 or 4 relays) for 2-pipe and 4-pipe fan coils with TFL/TDF room sensors.
Also known as: EFCB, EFCB10TU2, EFCB10TU4, EFCB11TU2, EFCB11TU4, EFCB12TU2, EFCB12TU4 - Fan coil unit controller
Neptronic EFCB-OE1 Series Fan Coil Controller
Neptronic EFCB-OE1 fan coil controllers (24 or 240 Vac, 0, 2 or 4 relays), an OEM variant of the EFCB series.
Also known as: EFCB-OE1, EFCB10T-OE1, EFCB12T-OE1, EFCB12TU2-OE1, EFCB12TU4-OE1 - VAV terminal unit controller
Neptronic EVCB14N Series VAV Controller
Neptronic EVCB14N networkable VAV controllers with integrated damper actuator, pressure-independent or pressure-dependent, with 0-4 triac outputs.
Also known as: EVCB14N, EVCB14NIT0S, EVCB14NIT2S, EVCB14NIT4S, EVCB14NDT4S, EVCB14NIT0SF, EVCB14NIT4SF - VAV terminal unit controller
Neptronic EVCB14NxT4X VAV Controller (external motor)
Neptronic EVCB14N VAV controllers with four triac outputs that drive an external damper motor, pressure independent (IT4X) or dependent (DT4X).
Also known as: EVCB14NxT4X, EVCB14NIT4X, EVCB14NDT4X - VAV terminal unit controller
Neptronic EVCB44N Series VAV Controller
Neptronic EVCB44N VAV controllers without triac outputs, pressure independent (IT0S) or pressure dependent (DT0S).
Also known as: EVCB44N, EVCB44NIT0S, EVCB44NDT0S - Dual duct VAV terminal controller
Neptronic EVCBM Dual Duct VAV Controller
Neptronic EVCBM master controller used on dual duct terminals, with a second (slave) airflow channel for the other duct.
Also known as: EVCBM, EVCBM Dual Duct, EVCB dual duct - Steam humidifier valve controller
Neptronic SKDESC-xB
Neptronic SKDESC-xB electronic controllers for steam-to-steam / direct steam injection humidifier valves (ESCJx jacketed, ESCMx models).
Also known as: SKDESC, SKDESCxB, ESCJx, ESCMx, Electronic Steam Controller - Electric steam humidifier
Neptronic SKE4
Neptronic SKE4 electric (heating element) steam humidifiers, indoor and outdoor versions.
Also known as: SKE4 electric steam humidifier, SKE4-N, SKE4-E, SKE4 BACnet - High-pressure atomizing humidifier / cooler
Neptronic SKH4
Neptronic SKH4 high-pressure water atomizing humidifiers and evaporative coolers with up to six zones (A-F).
Also known as: SKH4 high-pressure atomizer, SKH4 BACnet - Reverse osmosis water treatment unit
Neptronic SKRO
Neptronic SKRO reverse osmosis water treatment units feeding humidifiers.
Also known as: SKRO reverse osmosis, SKRO BACnet - Steam-to-steam humidifier
Neptronic SKS4
Neptronic SKS4 steam-to-steam (boiler steam heated) humidifiers.
Also known as: SKS4 steam to steam humidifier, SKS4 BACnet - Evaporative humidifier
Neptronic SKV
Neptronic SKV evaporative (media) humidifiers with up to four modules.
Also known as: SKV evaporative humidifier, SKV BACnet - Evaporative cooler / humidifier
Neptronic SKVF
Neptronic SKVF series evaporative coolers (also used for humidification).
Also known as: SKVF evaporative cooler, SKVF Series, SKVF BACnet - Fan coil / zone thermostat controller
Neptronic TFxB Series Thermostat Controller
Neptronic TFxB24 communicating thermostats for 2-pipe and 4-pipe fan coils and zone heating/cooling, including the humidity (TFHB) and OE variants.
Also known as: TFCB24F3XYZ1, TFCB24F3XY2, TFHB24F3XYZ1, TFHB24F3XYZ2, TFCB24P3-OE1, TFHB24P3-OE1, TFHB24P3-OE2, TFxB24
Source: SKG4 Gas Fired Humidifier BACnet Communication Module User Guide · SKG4-BACnet Guide-250609 (V2.06) · rev. 2025-06-09. Object names, instances and units are reproduced as published; descriptions are our own.