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Indoor air quality sensor (room) · BACnet points list
Delta Electronics UNOnext indoor air quality monitor (BACnet MS/TP) BACnet points list
Updated 12 November 2026
The UNOnext BACnet MS/TP version is a multi-gas room monitor. Over BACnet it reports temperature, humidity, PM2.5, PM10, CO2, light, TVOC, formaldehyde, CO, ozone, an external NTC temperature and an IAQ index, and has writable values for MAC address, temperature and CO2 calibration, display units and the panel and IAQ LED switches.
This page lists 20 BACnet objects for the Delta Electronics UNOnext indoor air quality monitor (BACnet MS/TP) — 6 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Delta Electronics’s own free documentation, linked below.
- Manufacturer
- Delta Electronics
- Model
- UNOnext indoor air quality monitor (BACnet MS/TP)
- Equipment
- Indoor air quality sensor (room)
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 20 (6 writable)
- Transport
- BACnet MS/TP
- Firmware
- Not stated
- Default device instance
- From the serial number (e.g. SN 2026N0FF0011 gives 260011)
- Also known as
- UNOnext, Delta UNOnext, UNOnext BACnet MS/TP
Reference only, provided as-is: verify against Delta Electronics’s current documentation and the live device before use. Not official Delta Electronics information. Terms of use.
BMS integration notes: Delta Electronics UNOnext indoor air quality monitor (BACnet MS/TP)
Set the MS/TP address and baud on the DIP switches (or write AV 0), then read the measurements the unit is fitted with.
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 |
|---|---|---|---|
| AI 4 | CO2 | CO2, ppm | Read |
| AI 0 | Temperature | Room temperature, °C | Read |
| AI 1 | Humidity | Relative humidity, % | Read |
| AI 2 | PM2.5 | PM2.5, µg/m³ | Read |
| AI 6 | TVOC | TVOC, ppm | Read |
| AI 13 | IAQ | Air quality index | Read |
Network setup
- AV 0 sets the MAC 0-127 and overrides the DIP setting; the device reboots after the write.
- Device instance comes from the serial number and is writable; factory reset restores it. Max_Master 127.
Watch out for
- AV 4 and AV 5 are not kept through a power loss.
Delta Electronics UNOnext indoor air quality monitor (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.
Note: the source document has no read/write column, so access here is inferred from the object type (inputs read-only, values writable). Confirm on the live controller before writing.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AImin | 0 | Temperature | Temperature, 0-50 | °C | Read | |
| AImin | 1 | Humidity | Relative humidity, 0-100 | % | Read | |
| AImin | 2 | PM2.5 | PM2.5, 0-1000 | µg/m³ | Read | |
| AI | 3 | PM10 | PM10, 0-1000 | µg/m³ | Read | |
| AImin | 4 | CO2 | CO2, 350-10000 | ppm | Read | |
| AI | 5 | Light | Light level, 0-10000 | lx | Read | |
| AImin | 6 | TVOC | TVOC, 0-60 | ppm | Read | |
| AI | 7 | HCHO | Formaldehyde, 0-50 | ppm | Read | |
| AI | 8 | CO | Carbon monoxide, 0-500 | ppm | Read | |
| AI | 9 | O3 | Ozone, 0-10 | ppm | Read | |
| AI | 10 | NTC | External NTC temperature, 0-50 | °C | Read | |
| AI | 11 | Temperature_F | Temperature in Fahrenheit | °F | Read | |
| AI | 12 | NTC_F | External NTC temperature in Fahrenheit | °F | Read | |
| AImin | 13 | IAQ | IAQ index (see the guide's indicator table) | Read | ||
| AV | 0 | MAC Address | MS/TP MAC 0-127; overrides DIP; reboots | Write | ||
| AV | 1 | Temperature_Cali | Write actual temperature x100 to calibrate | °C | Write | |
| AV | 2 | CO2_Cali | Write actual CO2 (400-2000) to calibrate | ppm | Write | |
| AV | 3 | Set_OLED_Fahrenheit | Display temperature unit | Write | 0=Celsius; 1=Fahrenheit | |
| AV | 4 | Panel_Ctl | OLED panel on/off (not kept on power loss) | Write | 0=Off; 1=On | |
| AV | 5 | IAQ_LED | IAQ indicator on/off (not kept on power loss) | Write | 0=Off; 1=On |
No points match these filters.
Object ID lookup: Delta Electronics UNOnext indoor air quality monitor point IDs by name
Integration notes
- The object table has no access column; AVs are marked writable from their descriptions.
- Fitted sensors vary by model; objects for gases a unit does not have will not report useful values.
- A sensor object's Out_Of_Service = true means that sensor is unhealthy; power cycle to recover.
- Different object set and numbering from the UNOlite and UNOslim.
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 UNOnext indoor air quality monitor (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 Delta Electronics UNOnext indoor air quality monitor (BACnet MS/TP)
How many BACnet points does the Delta Electronics UNOnext indoor air quality monitor (BACnet MS/TP) have?
This list has 20 BACnet objects: 14 analog inputs, 6 analog values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Delta Electronics UNOnext indoor air quality monitor (BACnet MS/TP) BACnet points are writable?
6 of the 20 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. The source has no read/write column, so this is inferred from object type.
Where is the official Delta Electronics UNOnext indoor air quality monitor (BACnet MS/TP) BACnet documentation?
The source is UNOnext indoor air quality monitor User Guide (BACnet MS/TP version), revision VER 0.6, published free by Delta Electronics at https://isdweb.deltaww.com/resources/files/UNOnext_bacnet_user_guide.pdf.
What are the minimum BACnet points to integrate the Delta Electronics UNOnext indoor air quality monitor (BACnet MS/TP)?
Start with AI 4 CO2 (CO2, ppm); AI 0 Temperature (Room temperature, °C); AI 1 Humidity (Relative humidity, %); AI 2 PM2.5 (PM2.5, µg/m³); AI 6 TVOC (TVOC, ppm); AI 13 IAQ (Air quality index).
How do I check these points on the real UNOnext indoor air quality monitor (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 Delta Electronics BACnet points lists
- Power and energy meter (panel meter)
Delta Electronics DPM-C530A power meter (BACnet MS/TP)
Delta Electronics DPM-C530A multifunction power meters on BACnet MS/TP.
Also known as: DPM-C530A, Delta DPM-C530, Delta multifunction power meter BACnet - Indoor air quality sensor (room)
Delta Electronics UNOlite indoor air quality monitor (BACnet MS/TP)
Delta UNOlite indoor air quality monitors (including the LWD model) with DIP switch 7 set to BACnet MS/TP.
Also known as: UNOlite, UNOlite LWD, Delta UNOlite, UNOLite BACnet - Indoor air quality sensor (room)
Delta Electronics UNOslim IAQ sensor (BACnet MS/TP)
Delta UNOslim (UNO-M) RS-485 indoor air quality sensors set to BACnet MS/TP.
Also known as: UNOslim, UNO-M, Delta UNOslim, UNOslim RS485 - Variable frequency drive
Delta Electronics VFD-CP2000 (embedded BACnet MS/TP)
Delta Electronics VFD-CP2000 AC motor drives using the built-in RS-485 port as BACnet MS/TP.
Also known as: CP2000, VFD-CP2000, Delta CP2000, Delta VFD CP2000
Source: UNOnext indoor air quality monitor User Guide (BACnet MS/TP version) · rev. VER 0.6. Object names, instances and units are reproduced as published; descriptions are our own.