The contact sensor is made up of two parts the sensor and the magnet.
How to attach an alarm door sensor to garage door.
How contact sensors work.
Installing the sensors as part of the garage door opener installation requires attention to wiring and adjustments to the devices themselves.
Garage door alarm sensors.
One part should be mounted on the door or window the other on the trim but it doesn t matter which one goes where.
Contact sensors come in two parts namely the sensor box and a magnet.
The sensor and magnet need to be close together.
The idea is to connect them to an existing alarm system.
1 push the safety sensor with attached carriage bolt.
Garage door alarm sensors are for security purposes.
The sensor box typically goes onto the garage doorframe.