1High Efficiency and Sensitivity: With the infrared photocell beam, the safety infrared sensor has high efficiency and sensitivity. 2Premium Plastic: The infrared sensor adopts premium plastic shell, which is durable and has long service life, and the operating environment is 25 to 55 . 3Dustproof and Waterproof: The water proof and dust proof egg shaped shell is sealed, so that it can work well in different weather types. 4Infrared Distance: When installing the wireless photocell sensor, the red color outside the protective cover shall be placed vertically. The transmitter produces a reliable, infrared beam that can reach 65 feet and 20 meters. When the infrared beam is interrupted, the relay will output the switch signal. 5Wide Application:The beam sensor is widely used in parking lots, office buildings, defensive walls, hospitals, family yards, garages, corridors and other places.