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alarm system contact sensor

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alarm system contact sensor

Alarm System 2 Pack Contact Sensor, Hausbell Home Security System,3G &

WiFi 2in1 Wireless Smart GSM Security Alarm,only 2 Pack Contact Sensor


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1 sellers are offering it on Ebay with coupons. Also alarm system contact sensor is one of the best sellers in and in 2020.

Door/Window contact sensor is one part of smart security system protect property family.
These can for the Apartment, etc. sensors keep track your home.
It of for your home business needs.
Total wireless built-in battery it is very installation moveable.Specifications:-Standby 24 Months.
Battery Warning.
DC 3V (1 Button -Transmitter put the Magnet's left right -Transmission Up 200M obstacle.
Current: 2μA. -Transmission 20mA.
Temperature: -10℃~40℃. -Humidity: ≤90%rh Includes: 1x Sensor for Installation Tape. 1x Specification.
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