Radiator Thermostat II help

Radiator Thermostat help II

Questions about your Radiator Thermostat II?

Questions about your Radiator Thermostat II? You can find installation videos, instructions and answers to frequently asked questions here.

Further information

Technical Data

Device type designation
Part Number
Protection class
Ambient temperature
0 °C … + 50 °C
10 % … 80 %
Housing dimensions (W × H × D)
51 × 51 × 87 mm
Weight (without batteries)
135 g
Radio frequency band
2.4 – 2.4835 GHz
Radio protocol
ZigBee 3.0
Max. transmitting power
3 mW
Radio range in the open
< 50 m
Software class
Receiver category
2 × LR6/Mignon/AA (alkaline)
Battery lifespan (typical)
< 2 years
Degree of soiling
Mode of operation
Valve connection
M30 × 1.5 mm
Max. power consumption
220 mA / < 0.8 W

Box contents

  • 1 radiator thermostat BTH-RA
  • 2 AA batteries
  • 1 Danfoss RA adapter
  • 1 Danfoss RAVL adapter
  • 1 User manual in 11 languages
Notes about battery disposal

In conjunction with the sale of batteries or supply of devices that contain batteries, we are obligated to point out the following:

Used batteries should not be disposed of in the household rubbish. Consumers are obligated to take batteries to a suitable collection point provided by retailers or municipalities.

The symbols on the batteries have the following meaning:

The symbol of the garbage can crossed out by an X means that the battery must not be disposed of in household waste.

Pb = Battery contains more than 0.004 percent lead by mass, Cd = Battery contains more than 0.002 percent cadmium by mass, Hg = Battery contains more than 0.0005 percent mercury by mass

Please note the instructions above.

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