Safety sensors: sensors located at the bottom corners of door that keep door from closing when door opening is obstructed and keeping opener from closing door on a car, animal or a person. There are two functions for the LED lights on sensors. On the off chance that your sensors have broken and should be supplanted then you ought to dependably transform them both in light of the fact that you can’t generally figure out which one is awful. You will now and then discover substitution sensors at handyman shops normally just for the more basic brands of openers like…