The fire detector is a battery operated photoelectric smoke alarm, adopting unique structure design and advanced photoelectric sensor technology, able to monitor and detect smoke particles in real time.Especially detects visible particles (associated with smouldering fire) sooner than ionization alarms. Once more...
model no sr-820phw-ac operating voltage ac110/220v(9v backup battery) interconnection install within the radius of 200 m hush function yes code form 2262 sending frequency 433mhz radio distance 200 m(open area) sensitivity 2.06%ft±1.3%ft sound level 85db/3m installation wall or ceiling mounted workin more...