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Sliding patio door hook up alarm wire.
It is also very important to choose a door contact that is compatible with the alarm system that is being used.
Use a screwdriver to disconnect the wires from the old sensor.
The second best location for alarm wiring is at the opening side about 18 above the floor.
They can be used with the new.
Both wireless and hardwired sensors can be used for this purpose.
Complete the following steps to replace wired door alarm sensors.
You do not need to fish the wires out from the wall.
In most cases it is wise to use a surface mounted sensor with a sliding door.
This location calls for a recessed contact and magnet.
If the sensor is recessed you will need to pull it out from the door frame to access the screw terminals.
Remove the old sensor.
Using a surface mount magnetic door switch and will make this easier in most cases.
Sliding glass doors should have wiring at the top if possible to allow making a vent zone later.