The OPB100SZ from OPTEK Technology is a versatile LED Emitter/Silicon Phototransistor Sensor that is designed for easy mounting and low-profile applications. This sensor features a snap mount mechanism, allowing for convenient installation on various surfaces. The LED emitter provides a reliable light source, while the silicon phototransistor sensor ensures accurate detection and measurement. With its compact size and low-profile design, the OPB100SZ is an ideal choice for space-constrained environments and applications where discreet sensing is required.