Specifications Monitored Retro-Reflective Photo Eye Meets 2018 UL 325 requirements Long Range Sensing distance up to 50 ft. Requires power only on one side of the installation Anti-Fogging Lens NEMA 4X rated Easy to see LED indicators (2) for instant feedback, aligned, misaligned or blocked Integrated Diagnostics with Gate Operator Speed Installation Compatible with LiftMaster Gate Operators with Monitored Safety Inputs only Steel sensor hood and durable polyethylene reflector hood, 6 ft. wire, brackets and mounting hardware included