Pololu Pololu QTRX-HD-31A Reflectance Sensor Array

The Pololu QTRX-HD-31A Reflectance Sensor Array is great for precisely identifying changes in reflectance (like line detection). It operates from 2.9 V to 5.5 V and offers dimmable brightness control independent of the supply voltage. Pololu QTRX-HD-31A Reflectance Sensor Array; Operating voltage: 2.9 V to 5.5 V; Optimal sensing distance: 10 mm; Maximum recommended sensing distance: 50 mm; Sensor count: 31 / Sensor pitch: 4 mm