Place a box or similar object between the safety sensors to block the sensing beam.
Garage door opener sensors setup.
This system allows them to detect obstructions like your car or a kid on a bike.
If the garage door opener closes the door with the safety sensors blocked replace the logic board.
Attempt to close the garage door using a remote.
Proper height for a garage door sensor is 4 to 6 inches 10 2 to 15 2 cm.
Garage door sensors work by shooting a beam of infrared light across the entrance of your garage to the sensor on the other side.
Lower is easy to stand above with a foot on either side.
If your garage door sensors are outside of this range remove them entirely from the garage door frame and install leveled inside the safe zone.
The sensors that make garage doors safer must be located in the worst possible place close to the floor.
The sensors are normally about 4 inches above the ground.
Open the garage door.
The door should stay open and the motor unit lights should blink.
The infrared beam from the garage door opener sensors isn t able to be seen by human eyes.
Higher than that can miss many low lying objects including pets.
As long as the beam isn t interrupted the door will open or close normally.