Photo 1 of SanJie Door Window Open Alarm,Door Chime Alarm Sensor for Home Security/Kids Safety/Business,Entry Alert Chime,600Feet Range,13 Chimes 5 Volume Levels,3 Choices of Ring Duration,2 Receivers 2 Sensors

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Photo 1 of SanJie Door Window Open Alarm,Door Chime Alarm Sensor for Home Security/Kids Safety/Business,Entry Alert Chime,600Feet Range,13 Chimes 5 Volume Levels,3 Choices of Ring Duration,2 Receivers 2 Sensors