The ITR20005 from Everlight is an opto-interrupter with reflective optical switches and phototransistor output. It consists of a reflector, infrared emitter and phototransistor, which are sealed in a plastic housing. The design of the device enables it to be used as a reliable sensing device for detecting presence of an object. It is suitable for use in various electrical and electronic devices. It can be used to detect object size, position, and proximity. It features reliability and low power consumption.