The QTR-1A reflectance sensor carries a single infrared LED and phototransistor pair in an inexpensive, tiny 0.5" x 0.3" module that can be mounted almost anywhere and is great for edge detection and line following. The reflectance measurement is output as an analog voltage. This sensor is sold in packs of two units.
Compare all products in Pololu QTR Reflectance Sensors.
0.3″ × 0.5″ × 0.1″1
- Without optional included header pins.
- For a single sensor without included optional header pins.