Waveshare Laser Receiver Module Laser Sensor Module Transmitter Module for Arduino AVR PIC Effective distance: 0.8m(typ), 1.5m(max) Applications Obstacle detection;Pipeline counter;Smart robot Obstacle-avoiding car Power: 2.5V ~ 5.0V;Dimension: 47.7mm * 17.9mm Mounting holes size: 2.0mm Features boost circuit;Signal output indicator 799632836476 WaveShare B00NJNYQ9G Diverse