Rudr Infrared (IR) Proximity/Obstacle Detecting Sensor Module Single-Sided PCB

"This is an Infrared based proximity sensor which are great for obstacle avoidance and line following robots. Our infrared transceiver module contains an infrared transmitter and a receiver fit in a compact form on a tiny board. Transmitter emits infrared light and another receiver (photo-transistor) receives that IR light after reflection. The module can be used to identify an obstacle or a nearest object - Onboard LED indicates if the module is connected properly - Another onboard LED indicates when threshold values are touched (turns on) - Great for DIY projects and Arduino beginners - M3 Mounting holes to mount the module on your desk or project - Proximity range up to 7 centimeters depending on the obstructing object and surrounding environment."