Seeed Studio (101020587) Optical Rotary Encoder Board, 3.3V / 5V

Grove - Optical Rotary Encoder(TCUT1600X01) is a transmissive sensor thatincludes an infrared emitter and two phototransistor detectors. Usually, theinfrared emitter emits infrared rays, the phototransistor detectors receives theinfrared rays, then the phototransistor is turned on, both of the output isHigh, the on-board LED indicators light up. When there is an obstacle blocking,the phototransistor can not receive the infrared rays, so the phototransistorwill be turned off and both of the output will be Low, the on-board LEDindicators fade away. It is used in automotive optical sensors, accurateposition sensor for encoder, sensor for motion, speed, and direction and sensorfor "turn and push" encoding.Specifications:- Accessory Type: Optical Rotary Encoder Board- For Use With: Arduino Board- Double phototransistor detectors, can determine the direction of rotation- On-board LED indicators- Grove Interface, easy to use- Operating voltage is 3.3V / 5V- Operating temperature range from 40 C to +105 C- 950nm wavelength