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10pcs 3v-5v 650nm Adjustable Mini Laser Sensor Module 5mw Arduino Red Laser Spot Diode Copper Head Level Meter Ground Wire Meter - Sensors - AliExpress
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Amazon.com: Laser Sensor Detector Module Receiver Transmitter for Arduino AVR PIC Application for Obstacle detection Pipeline Counter Smart Robot Obstacle-avoiding Car @XYGStudy : Electronics
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