The Genie Safe-T-Beam system is designed to ensure maximum safety for your garage door opener operation. This replacement garage door safety sensor kit uses an invisible infrared beam across the opening of the door, the system detects any object passing through the LED beam of light and automatically reverses the closing garage door. This auto reverse function keeps children and pets safe. If your Safe-T-Beam system has been damaged, a replacement kit is essential to continue safe operation of your garage door opener. This kit is compatible with Genie garage door openers manufactured since 1993. Installation is easy, with mounting brackets and hardware included. These replacement Safe-T-Beams are self-diagnostic and will alert you if they are not lined up and working properly. A simple adjustment is all that is needed to ensure the safe operation of your garage door. Don't leave safety up to chance - replace your safety beams with this kit today.