Pull the string taut and tie to the.

How to adjust garage door sensors. Garage door sensors run on batteries, which is likely due to low. Press the control button to close the door. Loosen the bolts with a wrench or socket set, but do not remove them altogether.

Pull this ribbon through the doorway and center it on the other sensor. Do the same on the. If you don’t disconnect the power, you risk electrocuting yourself.

Screwdriver string tape measure level Garage door sensors work by shooting a beam of infrared light across your garage entrance to the sensor on the other side. It should reverse immediately upon striking the.

Tie a string (long enough to span the width of the garage door) around the bracket on one side so that the string will line up with the sensor lens. Try pressing the close button with the object in place and checking if the door immediately stops and folds up upon sensing the item. Finally, turn the power back on and test your alignment by clicking the garage door button.

Find the white plastic limit switch lever. Tie a ribbon to one of the sensors so it’s centered on the sensor when pulled through the doorway. Once those are connected, move on to the white control wire.

Close the door and then hold the button to open it. After that, you can fasten the sensors. If the sensors are now aligned, you.