Room Comfort Sensor Tree

The Room Comfort Sensor Tree is used to measure temperature, humidity and CO2 in rooms or similar applications. The openings in the housing ensure rapid response to changes in measured values.

Datasheet Room Comfort Sensor Tree

Table of Contents


The recommended mounting height for the indoor climate sensor is between 1.2 m (4 ft) - 1.5 m (5 ft) when mounted on the wall. The positioning of the sensor should be adapted to the application. (e.g. according to what area of a space is generally occupied)

Install the mounting frame at the desired location.

Connect the power supply (orange/white terminal) and Tree communication wires (green/white terminals). Shortly after power-up, the status LED will blink orange if the wiring is correct (connection to Tree Extension and Miniserver is established).

Mount the device by snapping it onto the mounting frame.


Then follow the pairing procedure

Calibrate CO2 sensor

It is possible to calibrate the integrated CO2 sensor.
This calibration described below is generally not necessary. Perform this only if you are requested to do so:

Open the windows in the room for at least 30 minutes to ensure proper ventilation. This way the room will reach the CO2 value of the outside air of about 400ppm.

Then the following webservice command is executed using a browser:


This sets the current measured value of the sensor to 400ppm.


Summary Description Unit Value Range
Temperature Provides the air temperature. ° -40...125
Humidity Provides the air humidity. % 0...100
CO2 Provides the CO2 value. ppm 400...10000

Diagnostic Inputs

Summary Unit Value Range
Online Status Room Comfort Sensor Tree Digital 0/1


Summary Description Default Value
Monitor Online Status When selected, you will be notified via System Status or the Mailer if the device is no longer available or goes offline. -
Serial Number Specifies the serial number of the device.
For Extensions: 'Auto' may only be used if only one Extension of this type is being used.
Device type Tree device type -

Safety Instructions

The installation must be carried out by a qualified technician in accordance with all applicable regulations.

The installation requires a suitable enclosure to ensure protection against contact, water and dust.

The device must not be used as part of safety-critical systems.


Datasheet Room Comfort Sensor Tree