POLOLU-961 QTR-8RC Reflectance Sensor Array This sensor module has 8 IR LED/phototransistor pairs mounted on a 0.375" pitch, making it a great detector for a line-following robot. Pairs of LEDs are arranged in series to halve current consumption, and a MOSFET allows the LEDs to be turned off for additional sensing or power-savings options. Each sensor provides a separate digital I/O-measurable output. Specifications Dimensions 2.95" x 0.5" x 0.125" (without header pins installed) Operating voltage 3.3-5.0 AND V Supply current 100 AND mA Output format 8 digital I/O-compatible signals that can be read as a timed high pulse Optimal sensing distance 0.125" (3 AND mm) Maximum recommended sensing distance 0.375" (9.5 AND mm) Weight without header pins 0.11 AND oz (3.09 AND g)
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