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Indoor air quality sensor (temperature, humidity, CO2, TVOC, PM2.5, light, noise) · BACnet points list

Siemens QNA2..D indoor air quality multi-sensor (BACnet IP / MS/TP) BACnet points list

Updated 12 November 2026

Short answer

The QNA2..D is a room multi-sensor that reports nine read-only Analog Inputs: temperature in °C and °F, humidity, CO2, TVOC, PM2.5, light, noise and a 0-100 air quality score. It runs on BACnet IP or BACnet MS/TP.

This page lists 9 BACnet objects for the Siemens QNA2..D indoor air quality multi-sensor (BACnet IP / MS/TP) — 0 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Siemens’s own free documentation, linked below.

Manufacturer
Siemens
Model
QNA2..D indoor air quality multi-sensor (BACnet IP / MS/TP)
Equipment
Indoor air quality sensor (temperature, humidity, CO2, TVOC, PM2.5, light, noise)
Equipment type
Thermostats, sensors & meters
BACnet objects
9 (0 writable)
Transport
BACnet IP, BACnet MS/TP
Firmware
Not stated
Also known as
QNA2, QNA2..D, Siemens QNA2, IAQ multi-sensor
Source document
QNA2..D Indoor air quality multi-sensor Data Sheet · A6V13589454 · rev. 2025-06-18
Download CSV 9 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against Siemens’s current documentation and the live device before use. Not official Siemens information. Terms of use.

BMS integration notes: Siemens QNA2..D indoor air quality multi-sensor (BACnet IP / MS/TP)

Integration in brief

Poll or read the Analog Inputs you need; pick AI 0 or AI 8 depending on the unit system. CO2, TVOC and PM2.5 are the usual ventilation inputs.

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.

ObjectNameWhyAccess
AI 0TemperatureRoom temperature, °C (AI 8 for °F)Read
AI 1Relative humidityRoom relative humidityRead
AI 2Carbon dioxideRoom CO2, ppmRead
AI 3TVOCTVOC, ppbRead
AI 4PM2.5PM2.5, µg/m³Read

Network setup

Siemens QNA2..D indoor air quality multi-sensor (BACnet IP / 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.

9 of 9 shown
Type
Analog
Show
Siemens QNA2..D indoor air quality multi-sensor (BACnet IP / MS/TP) BACnet Points List
DescriptionStates
AImin0TemperatureIndoor air temperature, 0-90°CRead
AImin1Relative humidityIndoor relative humidity, 0-100%RHRead
AImin2Carbon dioxideIndoor CO2, 400-5000ppmRead
AImin3TVOCTotal volatile organic compounds, 20-60000ppbRead
AImin4PM2.5Particulate matter PM2.5, 0-1000µg/m³Read
AI5LightLight level, 0-64000luxRead
AI6NoiseSound pressure level, A-weighted, 48-90dBARead
AI7Air quality scoreSiemens air quality score, 0-100Read
AI8Temperature FahrenheitIndoor air temperature, 32-194°FRead
Object ID lookup: Siemens QNA2..D point IDs by name

Integration notes

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 QNA2..D indoor air quality multi-sensor (BACnet IP / 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 Siemens QNA2..D indoor air quality multi-sensor (BACnet IP / MS/TP)

How many BACnet points does the Siemens QNA2..D indoor air quality multi-sensor (BACnet IP / MS/TP) have?

This list has 9 BACnet objects: 9 analog inputs. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Siemens QNA2..D indoor air quality multi-sensor (BACnet IP / MS/TP) BACnet points are writable?

None of the listed objects are marked writable in the source documentation. The source has no read/write column, so this is inferred from object type.

Where is the official Siemens QNA2..D indoor air quality multi-sensor (BACnet IP / MS/TP) BACnet documentation?

The source is QNA2..D Indoor air quality multi-sensor Data Sheet (A6V13589454), revision 2025-06-18, published free by Siemens at https://sid.siemens.com/r/A6V13589454.

What are the minimum BACnet points to integrate the Siemens QNA2..D indoor air quality multi-sensor (BACnet IP / MS/TP)?

Start with AI 0 Temperature (Room temperature, °C (AI 8 for °F)); AI 1 Relative humidity (Room relative humidity); AI 2 Carbon dioxide (Room CO2, ppm); AI 3 TVOC (TVOC, ppb); AI 4 PM2.5 (PM2.5, µg/m³).

How do I check these points on the real QNA2..D indoor air quality multi-sensor (BACnet IP / 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 Siemens BACnet points lists

Source: QNA2..D Indoor air quality multi-sensor Data Sheet · A6V13589454 · rev. 2025-06-18. Object names, instances and units are reproduced as published; descriptions are our own.