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Room air quality sensor (temperature / RH / CO2) · BACnet points list
Senva AQ Series wall air quality sensor (BACnet MS/TP) BACnet points list
Updated 6 November 2026
The AQ Series is a Senva wall sensor with native BACnet MS/TP. For temperature, RH, dew point and CO2 it gives a smoothed value, a raw value and resettable min/max Analog Inputs, plus the occupant set point. Analog Values hold calibration, smoothing, CO2 auto-cal, set point range and internal relay settings; a commandable Binary Output drives the relay.
This page lists 62 BACnet objects for the Senva AQ Series wall air quality sensor (BACnet MS/TP) — 50 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Senva’s own free documentation, linked below.
- Manufacturer
- Senva
- Model
- AQ Series wall air quality sensor (BACnet MS/TP)
- Equipment
- Room air quality sensor (temperature / RH / CO2)
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 62 (50 writable)
- Transport
- BACnet MS/TP
- Firmware
- 1.0.5 (PICS Feb 12, 2016)
- Also known as
- AQ Series, AQW, AQW-XXXXXXX, Senva AQ CO2 sensor, Senva AQ temperature humidity CO2
Reference only, provided as-is: verify against Senva’s current documentation and the live device before use. Not official Senva information. Terms of use.
BMS integration notes: Senva AQ Series wall air quality sensor (BACnet MS/TP)
Set baud and MAC with the auto-configuration wizard or Setup Menu (BACnet stays off until both are set), choose BACnet temperature units with MSV 2, then read the smoothed temperature, RH and CO2. The BMS can command the relay through BO 0 when the internal relay program is disabled.
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 |
|---|---|---|---|
| BO 0 | Relay Output | Relay command (commandable) | Command |
| AI 0 | Temperature | Space temperature | Read |
| AI 4 | Relative Humidity | Space RH (humidity models) | Read |
| AI 12 | CO2 Concentration | Space CO2, ppm (CO2 models) | Read |
| AI 16 | User Set Point | Occupant set point | Read |
| BI 0 | User Push Button | Occupant push button | Read |
Enable & remote start
The internal relay program writes BO 0 at the priority in AV 25 (default 14) unless MSV 4 is set to Disabled; BMS commands at a higher priority win.
Network setup
- BACnet stays off until baud and MS/TP MAC (0-127) are configured, via the auto-configuration wizard or Setup Menu.
- MS/TP baud rates 9600-115200 are supported.
Watch out for
- When the MAC address is changed over BACnet, the device answers on the old address and moves to the new one afterwards.
- Writing any value to a Minimum/Maximum AI resets it; they also reset at restart.
Senva AQ Series wall air quality sensor (BACnet MS/TP) 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 | |||||
|---|---|---|---|---|---|---|
| AImin | 0 | Temperature | Smoothed temperature | °F / °C | Read | |
| AI | 1 | Temperature (unsmoothed) | Latest calibrated temperature reading | °F / °C | Read | |
| AI | 2 | Minimum Temperature | Lowest temperature since reset; write to reset | °F / °C | Write | |
| AI | 3 | Maximum Temperature | Highest temperature since reset; write to reset | °F / °C | Write | |
| AImin | 4 | Relative Humidity | Smoothed relative humidity (humidity models) | %RH | Read | |
| AI | 5 | Relative Humidity (unsmoothed) | Latest calibrated relative humidity reading (humidity models) | %RH | Read | |
| AI | 6 | Minimum Relative Humidity | Lowest relative humidity since reset; write to reset | %RH | Write | |
| AI | 7 | Maximum Relative Humidity | Highest relative humidity since reset; write to reset | %RH | Write | |
| AI | 8 | Dew Point Temperature | Smoothed dew point temperature (humidity models) | °F / °C | Read | |
| AI | 9 | Dew Point Temperature (unsmoothed) | Latest calibrated dew point temperature reading (humidity models) | °F / °C | Read | |
| AI | 10 | Minimum Dew Point Temperature | Lowest dew point temperature since reset; write to reset | °F / °C | Write | |
| AI | 11 | Maximum Dew Point Temperature | Highest dew point temperature since reset; write to reset | °F / °C | Write | |
| AImin | 12 | CO2 Concentration | Smoothed CO2 concentration (CO2 models) | ppm | Read | |
| AI | 13 | CO2 Concentration (unsmoothed) | Latest calibrated CO2 concentration reading (CO2 models) | ppm | Read | |
| AI | 14 | Minimum CO2 Concentration | Lowest CO2 concentration since reset; write to reset | ppm | Write | |
| AI | 15 | Maximum CO2 Concentration | Highest CO2 concentration since reset; write to reset | ppm | Write | |
| AImin | 16 | User Set Point | Occupant set point from slider or buttons | per MSV 3 | Read | |
| AI | 17 | Minimum User Set Point | Lowest set point since reset; write to reset | Write | ||
| AI | 18 | Maximum User Set Point | Highest set point since reset; write to reset | Write | ||
| AV | 0 | MAC Address | MS/TP address, 0-127 (not configured by default) | Write | ||
| AV | 1 | Device Uptime | Time since last restart | s | Read | |
| AV | 2 | Device Restart Count | Number of restarts | Read | ||
| AV | 3 | Display Contrast | LCD contrast, 0-100 % (default 50) | % | Write | |
| AV | 4 | Display Rotate Time | Seconds per value in display rotation (default 10) | s | Write | |
| AV | 5 | Temperature Calibration Slope | Temperature calibration gain (default 1.0) | Write | ||
| AV | 6 | Temperature Calibration Offset | Temperature calibration offset (default 0) | °F / °C | Write | |
| AV | 7 | Temperature Response Time | Temperature smoothing time (default 30) | s | Write | |
| AV | 8 | Relative Humidity Calibration Slope | RH calibration gain (default 1.0) | Write | ||
| AV | 9 | Relative Humidity Calibration Offset | RH calibration offset (default 0) | %RH | Write | |
| AV | 10 | Relative Humidity Response Time | RH smoothing time (default 30) | s | Write | |
| AV | 11 | Dew Point Calibration Slope | Dew point calibration gain (default 1.0) | Write | ||
| AV | 12 | Dew Point Calibration Offset | Dew point calibration offset (default 0) | °F / °C | Write | |
| AV | 13 | Dew Point Response Time | Dew point smoothing time (default 30) | s | Write | |
| AV | 14 | CO2 Calibration Slope | CO2 calibration gain (default 1.0) | Write | ||
| AV | 15 | CO2 Calibration Offset | CO2 calibration offset (default 0) | ppm | Write | |
| AV | 16 | CO2 Response Time | CO2 smoothing time (default 30) | s | Write | |
| AV | 17 | CO2 Auto Calibration Period | CO2 auto-cal period, 0-60 days, 0 = off (default 14) | days | Write | |
| AV | 18 | CO2 Auto Calibration Target | CO2 auto-cal target (default 400) | ppm | Write | |
| AV | 19 | CO2 Auto Calibration Window | CO2 auto-cal window (default 200) | ppm | Write | |
| AV | 20 | User Set Point Minimum Value | Bottom of set point range (default 50 °F) | per MSV 3 | Write | |
| AV | 21 | User Set Point Maximum Value | Top of set point range (default 95 °F) | per MSV 3 | Write | |
| AV | 22 | User Set Point Increment | Set point step size (default 1.0) | per MSV 3 | Write | |
| AV | 23 | Internal Relay Program Threshold | Relay trip threshold (default 800); units follow MSV 4 | Write | ||
| AV | 24 | Internal Relay Program Hysteresis | Relay hysteresis (default 100); units follow MSV 4 | Write | ||
| AV | 25 | Internal Relay Program Priority | Priority the internal relay logic writes BO 0 at, 6-16 (default 14) | Write | ||
| AV | 26 | Temperature Override Value | Display override for temperature; NULL clears | °F / °C | Write | |
| AV | 27 | Relative Humidity Override Value | Display override for RH; NULL clears | %RH | Write | |
| AV | 28 | Dew Point Temperature Override Value | Display override for dew point; NULL clears | °F / °C | Write | |
| AV | 29 | CO2 Concentration Override Value | Display override for CO2; NULL clears | ppm | Write | |
| BImin | 0 | User Push Button | Push button state (if fitted); read by the controller | Read | ||
| BOmin | 0 | Relay Output | Relay command (commandable; internal program writes at AV 25 priority) | Command | ||
| BV | 0 | Identify Device | Shows the MAC address on the display while active | Write | ||
| BV | 1 | Temperature Override Enable | Display shows AV 26 instead of AI 0 | Write | ||
| BV | 2 | Relative Humidity Override Enable | Display shows AV 27 instead of AI 4 | Write | ||
| BV | 3 | Dew Point Temperature Override Enable | Display shows AV 28 instead of AI 8 | Write | ||
| BV | 4 | CO2 Concentration Override Enable | Display shows AV 29 instead of AI 12 | Write | ||
| MV | 0 | Display Selection | Values shown on the display (default User Selection) | Write | 1=Display Off, 2=User Selection, 3=Temperature Only, 4=Relative Humidity Only, 5=Temperature and Relative Humidity, 6=CO2 Only, 7=Temperature And CO2, 8=Relative Humidity and CO2, 9=Temperature, Relative Humidity, and CO2, 10=Dew Point Only, 11=Set Point Only | |
| MV | 1 | Display Temperature Units | Temperature units on the display | Write | 1=User Selection, 2=Degrees Fahrenheit, 3=Degrees Celsius | |
| MV | 2 | BACnet Temperature Units | Temperature units for BACnet values (default °F) | Write | 1=Degrees Fahrenheit, 2=Degrees Celsius | |
| MV | 3 | User Set Point Units | Units shown with the set point (default °F) | Write | 1=Disabled, 2=No Units (value only), 3=Degrees Fahrenheit, 4=Degrees Celsius, 5=Relative Humidity (%RH), 6=Parts Per Million (ppm), 7=Pounds per Square Inch (psi), 8=Kilopascals (kPa), 9=Inches of Water Column ("WC) | |
| MV | 4 | Internal Relay Program Source | Value the internal relay logic compares (default CO2) | Write | 1=Disabled, 2=Temperature, 3=Temperature (unsmoothed), 4=Relative Humidity, 5=Relative Humidity (unsmoothed), 6=Dew Point Temperature, 7=Dew Point Temperature (unsmoothed), 8=CO2 Concentration, 9=CO2 Concentration (unsmoothed), 10=User Set Point | |
| MV | 5 | Internal Relay Program Polarity | Relay logic direction (default Active High) | Write | 1=Active High, 2=Active Low |
No points match these filters.
Object ID lookup: Senva AQ Series wall air quality sensor point IDs by name
AI0TemperatureAI1Temperature (unsmoothed)AI2Minimum TemperatureAI3Maximum TemperatureAI4Relative HumidityAI5Relative Humidity (unsmoothed)AI6Minimum Relative HumidityAI7Maximum Relative HumidityAI8Dew Point TemperatureAI9Dew Point Temperature (unsmoothed)AI10Minimum Dew Point TemperatureAI11Maximum Dew Point TemperatureAI12CO2 ConcentrationAI13CO2 Concentration (unsmoothed)AI14Minimum CO2 ConcentrationAI15Maximum CO2 ConcentrationAI16User Set PointAI17Minimum User Set PointAI18Maximum User Set PointAV0MAC AddressAV1Device UptimeAV2Device Restart CountAV3Display ContrastAV4Display Rotate TimeAV5Temperature Calibration SlopeAV6Temperature Calibration OffsetAV7Temperature Response TimeAV8Relative Humidity Calibration SlopeAV9Relative Humidity Calibration OffsetAV10Relative Humidity Response TimeAV11Dew Point Calibration SlopeAV12Dew Point Calibration OffsetAV13Dew Point Response TimeAV14CO2 Calibration SlopeAV15CO2 Calibration OffsetAV16CO2 Response TimeAV17CO2 Auto Calibration PeriodAV18CO2 Auto Calibration TargetAV19CO2 Auto Calibration WindowAV20User Set Point Minimum ValueAV21User Set Point Maximum ValueAV22User Set Point IncrementAV23Internal Relay Program ThresholdAV24Internal Relay Program HysteresisAV25Internal Relay Program PriorityAV26Temperature Override ValueAV27Relative Humidity Override ValueAV28Dew Point Temperature Override ValueAV29CO2 Concentration Override ValueBI0User Push ButtonBO0Relay OutputBV0Identify DeviceBV1Temperature Override EnableBV2Relative Humidity Override EnableBV3Dew Point Temperature Override EnableBV4CO2 Concentration Override EnableMV0Display SelectionMV1Display Temperature UnitsMV2BACnet Temperature UnitsMV3User Set Point UnitsMV4Internal Relay Program SourceMV5Internal Relay Program Polarity
Integration notes
- Points from the object sections of protocol guide 154-0012-0E (object list on pages 2-3).
- RH and dew point objects need the humidity sensor; CO2 objects need the CO2 sensor.
- Temperature values over BACnet follow MSV 2 (default °F), independent of the display units.
- Override values (AV 26-29) only change what the display shows; they reset at restart.
- Multistate objects are MSV in the guide; listed here as MV.
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. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the AQ Series wall air quality sensor (BACnet MS/TP) 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 Senva AQ Series wall air quality sensor (BACnet MS/TP)
How many BACnet points does the Senva AQ Series wall air quality sensor (BACnet MS/TP) have?
This list has 62 BACnet objects: 19 analog inputs, 30 analog values, 1 binary input, 1 binary output, 5 binary values, 6 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Senva AQ Series wall air quality sensor (BACnet MS/TP) BACnet points are writable?
50 of the 62 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 Senva AQ Series wall air quality sensor (BACnet MS/TP) BACnet documentation?
The source is BACnet Protocol Guide AQ Series (154-0012-0E), revision 2016-02-12, published free by Senva at https://www.senvainc.com/catalog/documents/downloadcenter/AQ%20Series%20BACnet%20Protocol%20Guide%20-%20Version%201.0.5.pdf.
What are the minimum BACnet points to integrate the Senva AQ Series wall air quality sensor (BACnet MS/TP)?
Start with BO 0 Relay Output (Relay command (commandable)); AI 0 Temperature (Space temperature); AI 4 Relative Humidity (Space RH (humidity models)); AI 12 CO2 Concentration (Space CO2, ppm (CO2 models)); AI 16 User Set Point (Occupant set point); BI 0 User Push Button (Occupant push button).
How do I enable BMS control of the Senva AQ Series wall air quality sensor (BACnet MS/TP)?
The internal relay program writes BO 0 at the priority in AV 25 (default 14) unless MSV 4 is set to Disabled; BMS commands at a higher priority win.
How do I check these points on the real AQ Series wall air quality sensor (BACnet MS/TP)?
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 Senva BACnet points lists
- Power and energy meter (submeter)
Senva EMX energy meter (BACnet MS/TP and BACnet IP)
Senva EMX, EMX-L (BACnet MS/TP) and EMX-IP (BACnet IP) three-phase energy meters.
Also known as: EMX, EMX-L, EMX-IP, Senva EMX power meter, Senva EMX submeter - Gas detector / sensor (toxic gas, dual sensor)
Senva TG Series toxic gas detector (BACnet MS/TP)
Senva TG series toxic gas detectors (TGX-BXX-XX) with one or two gas sensors, optional thermistor, fan and alarm relays and buzzer, using BACnet MS/TP.
Also known as: TG, TGX-BXX-XX, Senva TG toxic gas, Senva TG CO NO2 detector - Gas detector / sensor (toxic gas, dual sensor)
Senva TGR Series recessed toxic gas sensor (BACnet MS/TP)
Senva TGR series recessed low-voltage toxic gas sensors (TGR-XXX) with one or two gas sensors, using BACnet MS/TP.
Also known as: TGR, TGR-XXX, Senva TGR toxic gas, Senva TGR recessed gas detector - Indoor air quality multi-sensor (CO2 / PM / TVOC / CO / ozone)
Senva TotalSense air quality sensor (BACnet MS/TP)
Senva TotalSense (AQ2W) room air quality sensors with temperature, RH, CO2, TVOC, particulates and optional CO, ozone, light, occupancy, pressure, relay and analog output, using BACnet MS/TP.
Also known as: TotalSense, AQ2W, AQ2W-XXXXXX, Senva TotalSense IAQ, Senva TotalSense CO2 PM TVOC
Source: BACnet Protocol Guide AQ Series · 154-0012-0E · rev. 2016-02-12. Object names, instances and units are reproduced as published; descriptions are our own.