How Garage Door Safety Sensors Work

Garage door safety sensors are there to both protect and enhance the safety of your automated garage door. Too many accidents can occur without them or if they are malfunctioning.

What Do Garage Door Safety Sensors Do?

Safety sensors were invented as a result of accidents happening with automatic doors coming down on top of people, cars and animals.

When the device detects any person or object in the path of a closing garage door, it signals the motor to stop the downward action and switch the motion into reverse to stop the obstacle being crushed. The sensors are located low on each side of the garage door, and the 2 beams meet performing a connection. Should something block the beam, they set the garage doors into a reverse motion to keep the door from hitting or crushing the object.

Can Sensors Malfunction?

Sensors can malfunction if the beams are out of alignment or dirty. When this happens, they need to either be repaired or replaced. If the beams are dirty, they will not reach each other properly and this can cause them to malfunction.

The position of the sensors is such that they can be accidentally damaged by a knock or a bump. Being moved can throw them out of alignment, and they will then need to be adjusted to work correctly again. Knocking or bumping can also sometimes cause the connection wires to be damaged, which will then require repair.