Long Range Sensing distance up to 50 ft. Increased beam angle for simple, reliable alignment. Built-In Heater for dependable performance in most environments. Alignment strength indicator signals optimal beam alignment. Requires power only on one side of the installation. Steel sensor hood and durable polyethylene reflector hood, 10 ft. wire, brackets and mounting hardware included. NEMA 4X rated for superior weather resistance. Meets UL 325 Safety Standards.