ITEM NAME:10PCS IR Infrared Line Track Follower Sensor TCRT5000 Obstacle Avoidanc For Z2H7 10PCS IR Infrared Line Track Follower Sensor TCRT5000 Obstacle Avoidanc For Z2H7 Size: 3.5x 1cm Work Power : 5V DC Detector distance:10MM Build-in TCRT5000 Sensor NSOR Applicable to a variety of platforms including Arduino / AVR / ARM /PIC Colour: black Material: CCL Package Included: 10PC x IR Infrared Line Track Follower Sensor TCRT5000 Obstacle Avoidanc For Arduino Note: Light shooting 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..Build-in TCRT5000 Sensor NSOR. Detector distance:10MM. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. Work Power : 5V DC.