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Grove - Infrared Reflective Sensor


The reflectivity of infrared light varies with the color and distance of the reflecting surface. According to this principle, Grove - Infrared Reflective Sensor utilizes a RPR220 reflective photosensor module to detect color and distance. When a light-colored object approaches,the signal intensity received by infrared reflective sensor increases and the indicator LED on board turns red. When a dark-colored object approaches, the intensity decreases and the LED turns off. 

This sensor is a basic and widely used part in applications such as line-following cars, rotary speed detection, auto data logging on utility meters or other situations where color or distance contrast is sharp.


  • Operating voltage: 4.5 V - 5.5 V

  • Digital output, 0 or VCC

  • High resolution sensor;minimum detectable length: 1mm black line

  • Effective distance:4-15mm

  • Indicator LED on board

  • Sensitivity adjustable via potentiometer

  • Small Grove 1X1 compatible interface

For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your using of the product.

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