The best Liftmaster garage door opener system is a belt drive system. This opener has two key safety features. One is the photo electronic eye and the other is an auto reverse. This system comes highly recommended as the 3.Liftmaster garage door opener maintenance is quite simple to carry out without having to call experts. You should test these things at least once every couple of months. A photo electronic safety sensor detects objects in the path of the door. It is installed near the ground along the door tracks. 3 Liftmaster garage door opener maintenance wouldn’t be complete without…