The Reflective IR Sensor, in its simple plastic casing, houses an IR LED and IR phototransistor, offering a straightforward solution for detecting object reflectivity. Functioning over a range of approximately 2mm to 10mm, it excels when detecting light-colored objects within 5mm, making it perfect for close-range applications.With high-speed processing, it acts as a rotary encoder by analyzing black and white striped encoder wheels to determine RPM. This compact, breadboard-friendly sensor is ideal for line-following robots, providing quick detect-and-respond capabilities. Easily soldered, it features clear markings to differentiate the LED from the phototransistor output. While a resistor pack is not included, the sensor bundle includes five units, offering flexibility for various projects. https://elecena.pl/product/29477990/adafruit-miniature-reflective-infrared-optical-sensors-5-pack 2025-11-03 https://elecena.pl/product/29477990/adafruit-miniature-reflective-infrared-optical-sensors-5-pack 2026-01-24 https://elecena.pl/product/29477990/adafruit-miniature-reflective-infrared-optical-sensors-5-pack 2026-02-01 https://elecena.pl/product/29477990/adafruit-miniature-reflective-infrared-optical-sensors-5-pack 2026-04-08