IR Break Beam Sensor 5MM LEDs Distance Sensor Counting Photoelectric Through High-Speed and Accurate Detection: Operates on the infrared beam interruption principle with a rapid 2ms response time, offering superior performance compared to conventional PIR sensors. It delivers high-sensitivity, millisecond-level motion detection with precise positioning and eliminates false triggers. Broad Compatibility and User-Friendly Design: Supports a wide DC operating voltage range of 3-5V, enabling direct power supply from boards such as Arduino. It features an NPN normally open signal output, ensuring full compatibility with a variety of mainstream controllers and platforms. Easy Setup and Connection: With clear interface definitions and straightforward wiring, simply connect a 1K pull-up resistor between the signal line and the positive terminal to interface directly with a microcontroller's I/O port for rapid project implementation. Excellent for Robotics Competitions: An ideal component for smart robot contests, perfect for applications like basic motion detection, speed measurement, and accurate timing. Its fast and stable performance provides reliable real-time feedback for robotic systems. Versatile Applications: Capable of detecting any object that interrupts the light beam, not limited to metals. This makes it suitable for a wide array of uses including smart devices, sensing counters, industrial control (PLC), educational models, and more.