our main products are gsm alarm,mms gsm alarm, IP camera,wireless alarm,power alarm,anti-losing alarm,door/window sensor,etc Main featureHigh reliability sensorAuto-reset after alarmMCU processing adoptedMalfunction auto-check indicatorAlarm output N.C./ N.O. optionalDual sensor designBe able to work with electrovalve /exhaust fanSMT adopted, excellent stabilityAvailable for Natural gas, LPG, ...