uxcell Magnetic Sensor Home Door Window Entry Warning Switch
Package Content: 1 x Magnetic Door Sensor (2 parts ), 4 x Screw Nail; Suitable to used in apartment, hotel, office, etc; The Entry Alarm adopts magnetic sensor design to detect any entry from door or window; Once the two part of this alarm set is separated, it will warning you somebody is coming in with loudly and harsh sound
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