STEP 1: Check to make sure your garage door opener is equipped with photo eyes.
If your opener lacks a similar safety reversing feature, it’s time to get a new opener. Properly installed photo-eyes (black sensors) should be mounted no higher than six inches off the floor.
Do you know about The Six-Inch Rule? The photo eyes mentioned above should not be installed higher than six inches above the garage floor. If the eyes are installed higher, a person or pet could get under the beam and not be detected by the photo-eyes.