QTR-HD-11A Reflectance Sensor Array: 11-Channel, 4mm Pitch, Analog Output

PololuSKU: EXP-R25-1283

Sale price9,01 €

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Manufacturer number: 4211
Customs tariff number: 90275000
Country of origin: US

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This array of IR LED/phototransistor pairs 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 and separate controls for the odd and even emitters. 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 40 mm. This version features the traditional-style QTR sensors without lenses.


  • Size: 45.0 × 20.0 × 2.5 mm
  • Weight: 2.6 g
  • Maximum range: 40 mm
  • Optimal range: 5 mm
  • Minimum operating voltage: 2.9 V
  • Maximum operating voltage: 5.5 V
  • LED current: 30 mA
  • Peak wavelength: 940 nm
  • Maximum current draw: 185 mA
  • Sensor type: QTR
  • Sensor pitch: 4.0 mm
  • Sensor count: 11
  • Output type: A (analog voltages)

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That depends on where you are. After the order has been handed over to UPS, the delivery time in Germany is about 2-3 days, within Europe about 1 week.

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