This IR LED/phototransistor pair 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. In general, the closer the object, the higher the contrast between light and dark readings, but high-reflectance objects are generally detectable out to around 80 mm. This version features a high-performance QTRXL sensor with lenses and a high-brightness emitter for extra-long range.

Specifications:

• Dimensions: 5.0 20.0 4.4 mm
• Operating voltage: 2.9 V to 5.5 V
• Sensor type: QTRXL
• Sensor count: 1
• Full-brightness LED current: 30 mA (independent of supply voltage)
• Max board current: 32 mA
• Output format: digital I/O-compatible signal that can be read as a timed high pulse
• Optimal sensing distance: 20 mm
• Maximum recommended sensing distance: 80 mm
• Weight: 0.25 g