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The Recessed Door Sensor/Contact is a sensor and magnet that is placed inside the door and the frame. When the door is opened while the equipment is armed, your alarm will sound immediately. This allows homeowners with standard hinge doors to keep the sensor out of sight, instead of having the sensor attached to the top of the door and frame.
- Compact size, only 2½ in. Long
- HIDDEN WITHIN THE DOOR AND THE FRAME