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Overview Emitting a beam of infrared, and receive the reflected beam Features wide range voltage comparator LM393 Adjustable sensitivity Signal output indicator Specifications Power: 3.3V ~ 5V Dimension: 39mm ᅢラ 15.5mm (include the IR LED) Mounting holes size: 3mm Detection range: 2cm ~ 30cm (depending on the obstacle's color, farthest for white) Detection angle: 35ᅡᄚ Recommended environment: in door, to avoid the sunshine effect Applications Robot path tracking Obstacle-avoiding car Pipeline counter How to Use In the case of working with a MCU: