Infrared Emitters and Detectors kit

From the shop's description

Side-looking Infrared Emitters and IR Detectors. These simple devices operate at 940nm and work well for generic IR systems including remote control and touch-less object sensing. Using a simple ADC on any microcontroller will allow variable readings to be collected from the detector. The emitter is driven up to 50mA with a current limiting resistor as with any LED device. The detect is a NPN transistor that is biased by incoming IR light. Datasheets: IR Emitter (Yellow dot) IR Detector (Red dot) Applications: IR Schematic – Basic object detection schematic Robot Room – Excellent website with lots of goodies Sold as a pair , with one Emitter and one Detector.