High-quality indoor thermostat for intelligent time-dependent control of your heating in single-family homes, holiday homes, offices, multi-storey apartments, workshops, retail rooms, heating zones, doctor's practices transmitter and receiver with wireless connection, 80 metres range. The transmitter with thermometer and backlit display for adjusting the indoor temperature transmits the radio signal to the receiver, which regulates the temperature on the heater. . User adjustable time programming or adjustable temperature (6 temperature changes per day) Supports OT (OpenTherm) communication protocol and standard switching relay, thermometer with actual and set temperature display display Frost Protection, on/off mode, holiday mode (holiday program), thermostat lock function (lockout), displayed temperature calibration . Detailed German instruction manual and mounting bracket included. Switch with 230 V AC or without potential/switching current 10 (4) A, frequency 868 MHz, power supply transmitter 2 AA batteries (included in box contents). )))))ReceivBefore changing the thermostat, disconnect the heating/cooling system from the power supply in your home. This prevents possible injuries caused by electric current.