Description 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. Features - 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. https://elecena.pl/product/9696437/101020174-arduino-grove-infrared-reflection-sensor-rpr220 2017-08-05 https://elecena.pl/product/9696437/101020174-arduino-grove-infrared-reflection-sensor-rpr220 2017-10-18 https://elecena.pl/product/9696437/101020174-arduino-grove-infrared-reflection-sensor-rpr220 2018-01-25 https://elecena.pl/product/9696437/101020174-arduino-grove-infrared-reflection-sensor-rpr220 2021-05-21 https://elecena.pl/product/9696437/101020174-arduino-grove-infrared-reflection-sensor-rpr220 2021-12-13 https://elecena.pl/product/9696437/101020174-arduino-grove-infrared-reflection-sensor-rpr220 2022-06-01 https://elecena.pl/product/9696437/101020174-arduino-grove-infrared-reflection-sensor-rpr220 2022-11-07 https://elecena.pl/product/9696437/101020174-arduino-grove-infrared-reflection-sensor-rpr220 2023-04-04 https://elecena.pl/product/9696437/101020174-arduino-grove-infrared-reflection-sensor-rpr220 2023-11-12 https://elecena.pl/product/9696437/101020174-arduino-grove-infrared-reflection-sensor-rpr220 2026-02-20