RHX 10 Pcs TCRT5000L TCRT5000 Reflective Optical Sensor Infrared 950mm 5V 3A New Brand new and high quality. Compact construction, sense the presence of an object by using the reflective IR beam from the object. Consists of a phototransistor;Snap-in construction for PCB mounting. Position sensor for shaft encoder. Detection of reflective materials such as paper, IBM cards, magnetic tapes, etc.