Infrared Photoelectric Diode Network Output / LED Flash Alarm Metal Shield With High RFL / EMI Immunity SMT Design, High Stability Dustproof, Mothproof, Anti-light Design Installation: Ceilling....
Smoke and Heat Detector , Installation: Ceilling-mounted , Power: 6F22 battery 9V , Battery Life: Standby around 1 year , Detecting Area: 60Â ¡ ( installation height less than 6m , Have Hush & Test....