The garage door sensors prevent the garage door from closing on an object or a person in the garage doorway when it is attempting to close. When the sensors are faulty, the garage door remote may not work when pressed, causing the lights on the unit to blink.
This guide shows how to replace a Chamberlain garage door sensor. It is an easy procedure to perform and should take about thirty to forty-five minutes to complete. Minimal tools are required for this Fast Fix: a pair of wire strippers, a pair of pliers, and a step ladder.
The purchase of the replacement sensor based on the brand of garage door system is the part that is required to complete this project.
Match the wires from the wall and from the new sensor and connect them with the crimp by inserting two like-kind wires in one crimp with one wire going into each side.
The black striped goes with the black striped wire.
Place a box between the sensors and press the garage door button to close the garage door. The garage door should return to its starting point and the garage door light flash. This result means that the new sensors are working properly.