smoke detector:12V voice and lighting agive an alarm, Anti-fire smoke detectorsDC9V 1 * 6F22 battery, manual testing, automatic resetLED alarm instructions, field independent alarm ...

smoke detector:9V battery inside smoke detector /fire detector. ...

1.connected with the gas leak or fire alarm systems and other intelligent alarm control module connector terminals 2.pragmatic Over view:Emergency cut off the gas solenoid valve is cut off the gas pipeline safety emergency device. It can be connected with the gas leak or fire alarm...

1.Easy installation 2.auto-off valves efficient and reliable 3.Suitability 4.Fit all kinds of combustible gas Over view:New patent products, the leading price. Fit all kinds of combustible gas, fit 4 hours, 6 minutes, 1 inch different types of old and new gas pipeline valves,...