The light of the sensor module is adaptable to the environment and the working voltage is 3.3V ~ 5V.
When it detects the direction of a pair of infrared transmit and receive tubes, the obstacles (reflective surface) meet the reflected infrared rays received by the tube.
After the comparator circuit processing, the green signal light is turned on and the signal output interface can output the digital signal (low level signal) and adjust the sensing distance through the potentiometer handle. Effective range is 2 ~ 80cm, easy to assemble and use. Therefore, it can be widely used in many cases such as robot obstacle avoidance, obstacle avoidance car, and number of lines.