Smoke detector for Wireless Security System Model RTX200 2pcs, Applications: Alarming in case of smoke in living rooms, bed rooms, stokeholds, etc. Photoelectric sensor technique, Celling mountable Combined LED Button for function control, Batterie operated (9V block battery for smoke detector, 2 x AAA for radio module), Battery life-time for smoke detector up to 1 year, Low battery warning, Temperatur 4 bis 40 C, Indoor use
