Wireless window/door contact, 75x25x12mm, with battery (lifespan 7 years). Magnet anthracite matt and pure white 37x10x6mm. When closing and opening, the relevant telegram is sent twice in quick succession. The current status telegram is sent cyclically approximately every 8 minutes. Fastened by gluing. The wireless sensor can be taught into the following actuators and in the Professional Smart Home Controller: F2L14, F4HK14, FGM, FHK14, FHK61, FMZ14, FMZ61, FSB14, FSB61, FSB71, FSG14, FSR14, FSR61, FSR71, FTN14, FTN61, FUD14, FUD71, FUTH, FZK14, FZK61.