In most cases it is wise to use a surface mounted sensor with a sliding door.
Sliding patio door hook up alarm wire.
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They can be used with the new.
Complete the following steps to replace wired door alarm sensors.
You do not need to fish the wires out from the wall.
It is also very important to choose a door contact that is compatible with the alarm system that is being used.
Sliding glass doors should have wiring at the top if possible to allow making a vent zone later.
The second best location for alarm wiring is at the opening side about 18 above the floor.
Both wireless and hardwired sensors can be used for this purpose.
The best alarm contacts for sliding doors are skinny contacts that can properly fit on the door and its frame.
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Remove the old sensor.
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This location calls for a recessed contact and magnet.