KNX eTR 101

Room Temperature Controller

The Room Temperature Controller KNX eTR 101 measures the room temperature and displays the current value. Via the bus the device can receive an external measured value and process it with own data to overall temperature value (mixed value). The KNX eTR 101 has got an integrated PI controller for a heating and a cooling system (one or two step). The room temperature is adjusted by means of the + and - touch buttons.


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  • Measurement of temperature. Mixed value from own measured value and external values (proportions can be set in percentage), output of minimum and maximum values
  • Display of the actual value or the target value/basic setpoint shift
  • 2 touch buttons (+/-) vor adjustment of the room temperature
  • PI controller for heating (one or two step) and cooling (one or two step) depending on temperature. Control according to separate target values or basic target temperature

Configuration is made using the KNX software ETS 5

Housing plastic material, glass
Colours similar to RAL 9003 signal white
Mounting on-wall (directly or with a socket Ø 60 mm, resp. cavity wall socket for hole Ø 68 mm)
Protection category IP 20
Dimensions housing approx. 81,5 x 81,5 (W x H, mm), mounting depth approx. 12 mm
Total weight approx. 65 g
Ambient temperature Operation and storage -25…+80°C
Ambient air humidity max. 95% RH, avoid bedewing
Operating voltage KNX bus voltage
Bus current 10 mA at 50% LED brightness
18 mA at 100% LED brightness
Data output KNX +/- bus terminals
BCU type Own micro controller
PEI type 0
Group addresses max. 254
Allocations max. 254
Communication objects 41
Temperature measurement range -25…+80°C
Temperature resolution 0.1°C
Temperature accuracy ± 0.6°C (Mind the notes on Accuracy of the measurement)
made in germany