The NT-P54TZ with Optical Sensors RoHS is a device manufactured by Lipoo Technology, Inc. It features four optical sensors including two IR LEDs, two infrared receivers, two photoelectric detectors, and two active feedback channels. The device can sense light and dark objects, making it ideal for making decisions in automation systems. It has a very high achieving accuracy, and is RoHS compliant. This device is also provided with adjustable sensitivity and can be used for many different applications.