A photo-interrupter sensor detects when something blocks the light between the infrared emitter and receiver elements. They're great for robot projects, item dispensing, object detection and more - use them however you like! This sensor features an indicator LED to show you when the beam has detected an object - great for debugging. The sensor also comes with a 20-slot encoder disk and a 3-pin XH2.54 cable. Features * Infrared detection, eliminating the interferences of external stray light * Schmitt trigger - stable waveform and signals * Signal output indicator (while breaking the beam the sensor outputs a low level and the indicator LED lights up) Package Contents * 1x Photo Interrupter Sensor * 1x 20-slot encoder disk * 1x XH2.54 3-pin wire Specifications * Power: 3.3V ~ 5V * Dimension: 26.8mm × 15mm × 18.7mm * Mounting holes size: 3mm * Gap width: 6mm Applications * Motor speed detection * Pulse counter How to Use * Product Wiki In the case of working with a microcontroller: * VCC ↔ 3.3V ~ 5V * GND ↔ GND * DOUT ↔ MCU.IO (digital output) Dimensions https://elecena.pl/product/22720045/photo-interrupter-sensor 2023-03-07 https://elecena.pl/product/22720045/photo-interrupter-sensor 2023-12-27 https://elecena.pl/product/22720045/photo-interrupter-sensor 2024-09-19 https://elecena.pl/product/22720045/photo-interrupter-sensor 2024-11-29 https://elecena.pl/product/22720045/photo-interrupter-sensor 2024-11-30 https://elecena.pl/product/22720045/photo-interrupter-sensor 2025-08-05 https://elecena.pl/product/22720045/photo-interrupter-sensor 2025-11-28 https://elecena.pl/product/22720045/photo-interrupter-sensor 2025-11-29