The elevator light curtain is a new production of elevator door protected equipmentthat is specially developed for the elevator industry. The wholesystem consists of four main parts: power set, signal cable, the receiver (RX)and the emitter (TX). The receiver (RX) and the emitter (TX) be fixed respectivelyon the two sides of the elevator door and connected to the power set with specialshielded cable.When some people or objects entering into the infrared scanning area, the control system will immediately transit the output signal and order the door open.Otherwise, the door will shut off when people and objects get away from the infraredscanning area. Thereby reached the safety guard purpose.