The NT-D158U is a RoHS compliant optical sensor manufactured by Lipoo. It has a 1.25mm pitch SMD package and is an open emitter device composed of an infrared LED and an NPN silicon phototransistor. It is designed for use in various types of audio-visual application, such as DVD, VCD, CD players. It is also suitable for applications such as photocopiers, printers, libraries, document feeders, and pick-to-light systems. The NT-D158U has a fast response time, an extended Wave-length sensitivity, and an ultra-low current drain. It has an operating range of -40°C~85°C and a storage range of -40°C~100°C, and it is RoHS compliant.