Brand NO Model No Quantity 1 Color Blue + black Material PCB Features This product has strong adaption to environment and light Whenit approaches an obstacle infrared ray will reflect to the receiving tube being processed of comparator circuit green indicator light is on output is low level; You can rotate potentiometer to adjust detection range; Effective range; 2~30cm; Working voltage: 3.3V~5V; less interference easy installatio Specification Use the sensor made of black and white line tracing cars need not in the white paper on the black line running can be in cement yellow and complex environment tour line trace. As long as the color of periphery of the black line than black slightly shallow can eliminate the traditional move make the environment layout more simple. Application This module is designed for smart car robot and automated machine English Manual/Spec Yes (E-file) Packing List 1 x Obstacle avoidance sensor