The OPB891T51Z is a high-quality slotted optical switch designed by OPTEK TECHNOLOGY. Featuring a reliable NPN phototransistor output, this optical switch is ideal for various applications. With a slim slot size of 0.13" wide and 0.345" deep, it offers precise and accurate detection capabilities. The switch comes with 24"/26AWG wires, making it convenient to connect to your system. Trust OPTEK TECHNOLOGY to deliver excellent performance and robustness with the OPB891T51Z slotted optical switch.