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DAOKI 5 PCS Slot Type IR Optocoupler Speed Sensor Module LM393 for Arduino: Amazon.com: Industrial & Scientific
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AliExpress
HiLetgo IR Infrared Obstacle Avoidance Sensor Module for Arduino Robot | eBay
Amazon.com: 20 Pieces IR Infrared Obstacle Avoidance Sensor Module 3-Wire Reflective Photoelectric Sensor Module Compatible with Arduino Smart Car Robot Raspberry Pi 3 : Electronics
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ARD IR2 TX: Arduino - IR transmitter module at reichelt elektronik
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TCS34725 RGB Light Color Sensor Recognition Module w/ IR Blocking Filter Arduino | eBay
1PCS VS1838 Infrared Sensor Receiver Module Compatible For Arduino | eBay
