Wireless smoke alarm (smoke detector) pure white with wireless transmitter module in the mounting base. Ø86mm, 49mm high. With solar cell and battery (service life 10 years). The wireless sensor can be programmed into the following actuators and the Professional Smart Home Controller: FGM, FLC61, FMS14, FMZ14, FMZ61, FSR14, FSR61, FSR71, FZK14, FZK61.