How do you align a garage door sensor?
Elijah King
Updated on April 08, 2026
How do you align a garage door sensor?
Tie a string to one sensor so that, if pulled across the garage doorway, it will run across the center of the sensor. Run the string across the garage doorway and tie to the opposite sensor. Position the knot so the string runs across the center of that sensor, too.
Can you use a Safe T beam on a garage door?
You can reuse your existing wiring and mounting locations. You simply remove the wires from the current Safe-T-Beam sensors and unscrew them from the wall. Then reconnect the wires and remount to the wall. The garage door safety sensor beams should still be lined up.
How tall should the laser be on a garage door sensor?
If you have a laser level, you can use it instead of a string to align your garage door. In this case, you will set up the level aligned with one sensor, then adjust the opposite sensor until the beam of your laser level is hitting the sensor. Proper height for a garage door sensor is 4 to 6 inches (10.2 to 15.2 cm).
How does a garage door sensor protect you?
Learn more… Garage door sensors protect your family, possessions and pets by not allowing the heavy garage door to close if there is anything in the glide path. They do this by using an electric eye sensor that crosses the doorway. If the sensor doesn’t receive the beam emitted by its opposite number, the door won’t close.
Tie a string to one sensor so that, if pulled across the garage doorway, it will run across the center of the sensor. Run the string across the garage doorway and tie to the opposite sensor. Position the knot so the string runs across the center of that sensor, too.
If you have a laser level, you can use it instead of a string to align your garage door. In this case, you will set up the level aligned with one sensor, then adjust the opposite sensor until the beam of your laser level is hitting the sensor. Proper height for a garage door sensor is 4 to 6 inches (10.2 to 15.2 cm).
Learn more… Garage door sensors protect your family, possessions and pets by not allowing the heavy garage door to close if there is anything in the glide path. They do this by using an electric eye sensor that crosses the doorway. If the sensor doesn’t receive the beam emitted by its opposite number, the door won’t close.
Where is the force adjustment switch on a garage door?
As the years pass by the springs that work the door weaken and the amount of pressure required by the motor might need to be increased. If you look at the sensor on the right light lens, you should find the force adjustment switch just under the light. If it is a single garage door sensor it will probably be set on one.