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Humidity / temperature sensor · BACnet points list
Setra SRH300D / SRH200D humidity and temperature transmitter (BACnet MS/TP) BACnet points list
Updated 6 November 2026
The SRH300D and SRH200D are Setra humidity and temperature transmitters that act as BACnet MS/TP smart sensors. The SRH300D exposes eight read-only Analog Inputs (temperature, RH and calculated psychrometric values); the SRH200D exposes only temperature and RH. Units follow the configured measurement units.
This page lists 8 BACnet objects for the Setra SRH300D / SRH200D humidity and temperature transmitter (BACnet MS/TP) — 0 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Setra’s own free documentation, linked below.
- Manufacturer
- Setra
- Model
- SRH300D / SRH200D humidity and temperature transmitter (BACnet MS/TP)
- Equipment
- Humidity / temperature sensor
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 8 (0 writable)
- Transport
- BACnet MS/TP
- Firmware
- 1.8 (PICS dated 28.10.2014)
- Also known as
- SRH300D, SRH200D, SRH300, SRH200, Setra SRH BACnet
Reference only, provided as-is: verify against Setra’s current documentation and the live device before use. Not official Setra information. Terms of use.
BMS integration notes: Setra SRH300D / SRH200D humidity and temperature transmitter (BACnet MS/TP)
Set the MS/TP communication parameters and a unique device instance, then read temperature and RH (and dew point on the SRH300D). The device can also broadcast unsolicited COV when a COV increment is set.
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 0 | T | Air temperature | Read |
| AI 1 | RH | Relative humidity | Read |
| AI 3 | Td | Dew point (SRH300D only) | Read |
Network setup
- Default comms are 38,400 baud, 8 data bits, no parity, 1 stop bit; change them with the writable Communication Parameter device property (e.g. "76800-8n1").
- Device instance defaults to 1 (SRH300D) or 2 (SRH200D) and is writable; Max_Master (default 127) is writable.
- Reinitialize Device and Device Communication Control need the password printed in the PICS.
Watch out for
- COV reporting is unsolicited broadcast (no subscriptions) and is off until COV_Increment is set below 1e9.
- Changing the measurement units changes the AI Units and Description properties.
Setra SRH300D / SRH200D humidity and temperature transmitter (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 | T | Temperature | °C / °F / K | Read | |
| AImin | 1 | RH | Relative humidity | %RH | Read | |
| AI | 2 | e | Water vapor partial pressure (SRH300D only) | mbar / psi | Read | |
| AImin | 3 | Td | Dew point temperature (SRH300D only) | °C / °F / K | Read | |
| AI | 4 | dv | Absolute humidity (SRH300D only) | g/m3 / g/ft3 | Read | |
| AI | 5 | r | Mixing ratio (SRH300D only) | g/kg / gr/lb | Read | |
| AI | 6 | h | Enthalpy (SRH300D only) | kJ/kg / ft·lbf/lb / BTU/lb | Read | |
| AI | 7 | Tf | Frost point temperature (SRH300D only) | °C / °F / K | Read |
No points match these filters.
Object ID lookup: Setra SRH300D / SRH200D humidity and temperature transmitter point IDs by name
Integration notes
- Points from sections 11 and 12.2 of the PICS; object names are the short symbols printed there (T, RH, e, Td, dv, r, h, Tf).
- The SRH200D has only AI 0 (T) and AI 1 (RH); AI 2-AI 7 exist on the SRH300D only.
- Present_Value is writable only while Out_Of_Service is true (it then defaults to 50.0).
- Absolute humidity in g/ft3 and mixing ratio in gr/lb use units codes that are not ASHRAE-defined.
- Device instance defaults to 1 on the SRH300D and 2 on the SRH200D.
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 SRH300D / SRH200D humidity and temperature transmitter (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 Setra SRH300D / SRH200D humidity and temperature transmitter (BACnet MS/TP)
How many BACnet points does the Setra SRH300D / SRH200D humidity and temperature transmitter (BACnet MS/TP) have?
This list has 8 BACnet objects: 8 analog inputs. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Setra SRH300D / SRH200D humidity and temperature transmitter (BACnet MS/TP) BACnet points are writable?
None of the listed objects are marked writable in the source documentation.
Where is the official Setra SRH300D / SRH200D humidity and temperature transmitter (BACnet MS/TP) BACnet documentation?
The source is PICS SRH200D & SRH300D - BACnet Protocol Implementation Conformance Statement, revision 28.10.2014 (catalog copy dated 8/17/18), published free by Setra at https://www.bacnetinternational.net/catalog/manu/setra%20systems,%20inc./PICS_SRH200D_SRH300D%208_17_18.pdf.
What are the minimum BACnet points to integrate the Setra SRH300D / SRH200D humidity and temperature transmitter (BACnet MS/TP)?
Start with AI 0 T (Air temperature); AI 1 RH (Relative humidity); AI 3 Td (Dew point (SRH300D only)).
How do I check these points on the real SRH300D / SRH200D humidity and temperature transmitter (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 Setra BACnet points lists
- Room pressure monitor and controller
Setra FLEX Room Pressure Monitor
Setra FLEX wall-mounted room pressure and environmental monitors (FLEX-RM monitor-only and FLEX-RC room control) covering up to three rooms.
Also known as: SetraFLEX, Setra FLEX, FLEX-RM, FLEX-RC, Setra FLEX Environmental Monitor - Multi-load power meter
Setra Power Meter (SPM) - load device
Setra Power Meter (SPM) multi-load electrical meters; this entry covers each virtual load device (one per configured load).
Also known as: SPM, Setra SPM, Setra Power Meter, SPM load - Multi-load power meter
Setra Power Meter (SPM) - root device
Setra Power Meter (SPM) multi-load electrical meters; this entry covers the root device that carries the voltage inputs.
Also known as: SPM, Setra SPM, Setra Power Meter, Setra multi-load power meter
Source: PICS SRH200D & SRH300D - BACnet Protocol Implementation Conformance Statement · rev. 28.10.2014 (catalog copy dated 8/17/18). Object names, instances and units are reproduced as published; descriptions are our own.