Built to deliver unsurpassed performance and safety, these new operators provide peace of mind for every gate, every application. LiftMaster® has engineered our operators and monitored safety devices to work together as a 2016 UL 325 compliant system. Installation has never been easier now that every operator has a Monitored Retro-Reflective Photo Eye (LMRRU) packed in. Now it's your turn to check them out.