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Amazon.com: RCmall TF-LC02 Laser Lidar Range Finder Sensor 3cm~200cm Ranging Module with 6Pin Male Connector to Dupont Wire+CP2102 USB to TTL Serial Converter Module, Compatible with Arduino Smart Home Robot : Electronics
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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