Magnetic Sensor Home Burglar Anti-Theft Alarm System Battery

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Loud alarm will be triggered when someone open or close your door or window, make you informed all the time.
Voice Control, Compatible with Alexa & Google Home. Simply use y our voice to control the connected devices.
If you install more than one door sensor in different places. All the statuses of doors and windows will be displayed simultaneously within the app ,so that you can easily know what you want at a glance.
When the battery level is low, it will automatically remind you to change battery, never worry about running out of battery.Specification:Name: Door & Window Magnetic Sensor
Material: ABS
Size:69 x 24 x 20mm/2.7 x 0.9 x 0.8 inch
Transmission protocol: Zigbee
Wireless frequency: 2.4GHz
Working voltage: 2.4V—3.3V
Working current (report)
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