Individual room control, silent with 2 channels, 400W. 2 solid-state relays, not potential-free. Bidirectional. Standby loss only 0.1 watts. Connection to the Eltako RS485 bus. Cross-wiring of bus and power supply with jumper. If both relays are switched on, 0.4 watts are required. The nominal switching capacity of 400W applies to one contact and also as the sum of both contacts. From production week 51/17 with automatic electronic overtemperature shutdown. If the load is < 1W, a GLE must be connected in parallel to the load. The sensors are first taught in using the rotary switches. The channels can either be taught in together or completely separately. If the underfloor heating and radio button are taught in, the last telegram received always applies. When there is movement, an underfloor heating switches off a reduction mode selected with the radio button. If a radio button is taught-in, the assignment of the 4 buttons is fixed.