OPENJUMPER 3-Channel Gray Sensor Module - Red + Black
The principle of infrared sensor line three road is using infrared receiving tube detection infrared light reflected from the infrared transmitting tube (dark reflecting the weak and strong light reflection); Three road line sensor can help intelligent car take the white or black line trace detect of white in the black cable detect of black white cable date returned by the black line is detected is lower than data returned by the white line is detected.