Measurement of room temperature, capacitive touch zones and optical signalling with coloured LEDs for easy commissioning (touch to assign), connection via 1-Wire bus with Control Box Heating (for WiFi version incl. WLAN module (2,4 GHz) for communication with Room Controller WiFi, power supply 230 VAC), white casing RAL 9003 with UV protection, dimensions 55 × 55 mm (h × w) suitable for common switch boxes with 55 mm standard insert, protection class IP20, installation on flush box (screw spacing 60 mm) or direct on the wall, for flush mounting use of frames from standard switch ranges or HERZ clever&smart Single frame (3 F810 51), for surface mounting use of HERZ clever&smart Set surface frame (3 F810 52), delivery incl. mounting ring, without frame.