Use a pair of wire cutters to cut the white and black wire about an inch from the sensor.
Garage door safety reverse sensor.
This video demonstrates how to test the safety reversal system of your liftmaster garage door opener.
The latest garage door sensors are technologically advanced and even allow you to control the opening and closing through an app on your smartphone.
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Test door opener monthly.
If any object blocks the path of the infrared sensors the garage door opener will not activate or will reverse if operating.
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The garage door sensors are the safety add on to your garage doors.
The second line of defense is a set of infrared sensors which should be mounted 4 to 6 above the floor on each side of the garage door frame.
To learn how to test your garage door opener s protecto.
It prevents the doors from automatically closing when anyone is in the doorway.
Sometimes the sensor may be beyond repair due to wear and tear and in such a case your best bet is to replace the garage door sensor with a new one.
Garage doors may display a variety of symptoms if sensors need attention.
The garage door must reverse on contact with a 11 2 inch object or a 2 by 4 board laid flat on the floor.
The adjustment for the opener will.
Failure to adjust the opener properly may cause severe injury or death.
After adjusting either the force or the limit of travel retest the door opener.
Safety reversing sensors keep people and vehicles out of harm s way with liftmaster reversing sensors which detect an obstruction and reverses the gate to prevent an accident.
Cut the wires about 1 inch 2 5 cm from the safety sensor.
This video will show you how to perform the test of your garage door opener s safety reversal system.
The working of these sensors is quite simple.
Refer to the owner s manual to determine which is which.