door contact sensor

" found 2 Products from Shenzhen Bailingjia Technology Co. LTD, China

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Hot Sale Smart Product Alarm System Wireless Wifi for Guard Against Theft for Home: doorbell function13.Can store 6 alarm call phone No.+2 alarm SMS phone No.14.Support Three zone types: 24H line, 1st line, 2st line.15.Arm/alarm Delay for each defense zone. Timed arm/disarm ...

Hot Sale Independently Wireless 433mhz Kitchen Alarm Gas Leak Detector/Carbon Monoxide Detector: door sensor, gas detector, CO detector, smoke detector, etc. Please provide more details, we would provide the cataloguas your requirement.5. A: Do you have any certificates of your products?B: Our ...

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Hot Sale Smart Product Alarm System Wireless Wifi for Guard Against Theft for Home