QTR-MD-07A Reflectance Sensor Array: 7-Channel, 8mm Pitch, Analog Output

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. 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.

Specifications:

• Maximum range: 40mm
• Optimal range: 5mm
• Minimum operating voltage: 2.9V
• Maximum operating voltage: 5.5V
• LED current: 30mA
• Peak wavelength: 940nm
• Maximum current draw: 125mA
• Sensor type: QTR
• Sensor pitch: 8.0mm
• Sensor count: 7
• Output type: A (analog voltages)