Description: Grayscale sensors and infrared sensors have similarities, but they have characteristics that infrared sensors cannot match.Using high brightness spotlighting LED lights and receiving tubes to compare the strength of different reflected light, as long as the light. Different reflection strengths can be recognized, especially for green, white, or black and white track surfaces in many line patrol competitions All have good recognition effects, and the larger the color difference, the better the resolution; Add custom shade for mold making.Further improve product performance. Digital quantity, also known as switch signal, is a signal with high and low levels. A sensor that outputs as a signal; The signal does not require AD conversion and can be implemented without complex algorithms.The current signal acquisition and control is a major highlight and advantage for children's shoes that make smart cars for line patrol. Parameter: Supply voltage: 5V DC Working current: approximately 53mA (with fluctuations in different working environments) Signal indication: Five channel LED indicator lights Signal output: Low level effective output (high level output when sensing black) Detection distance: 10mm~50mm (recommended height is 15-25mm) Interface form: 2.54 pitch pin interface Color: Black Material: PCB Package Contents: 1 set 5-Channel Digital Tracking Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.