The OPB880T51Z is a slotted optical switch with a NPN phototransistor output. It features a slot that is 0.13 wide and 0.345 deep, making it ideal for precise detection and sensing applications. This reliable and high-quality switch is equipped with 24/26AWG wires for easy connectivity and installation. With its compact design and versatile performance, the OPB880T51Z is an excellent choice for a wide range of industrial and electronic applications.