BWYPH TCRT5000 IR Barrier Line Track Sensor Infrared Reflective Photoelectric Switch ReviewbP PP WYPH TCRT5000 IR Barrier Line Track Sensor Infrared Reflective Photoelectric Switch PUsing infrared reflection sensors TCRT5000PThe working voltage of 3.3V to 5VPOutput form: digital switch output (0 and 1)PHas a fixed bolt hole, convenient installation 8, small board PCB size: 3.2cm x 1.