Photo 1 of Tellegloww 20 Sets NC Wired Surface Mounted Alarm Magnetic Door Contact Sensor Door Window Reed Switch Sensor with Double Side Tape for Security

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Photo 1 of Tellegloww 20 Sets NC Wired Surface Mounted Alarm Magnetic Door Contact Sensor Door Window Reed Switch Sensor with Double Side Tape for SecurityPhoto 2 of Tellegloww 20 Sets NC Wired Surface Mounted Alarm Magnetic Door Contact Sensor Door Window Reed Switch Sensor with Double Side Tape for Security