1. Easy to use: The output port of the OUT sensor module can be directly connected to the IO port of the microcontroller, allowing direct control of a 5V relay. 2. Function: The IR infrared obstacle avoidance sensor module can be used for robot obstacle avoidance, vehicle obstacle avoidance, line counting, blackandwhite tracking, and more. 3. Adjustable distance: The detection range of the infrared module is 2 to 30 cm, with a detection angle of 35 degrees. 4. The IR sensor module is equipped with a pair of infrared transmitting and receiving tubes. The tubes emit infrared at a specific frequency. When the detection direction encounters an obstacle (reflective surface), the infrared is reflected and received by the tube. After processing by the comparator circuit, the green indicator lights up. At the same time, a digital signal (a lowlevel signal) is output through the signal output interface.