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4 Pin Laser Diode Test Socket ROSA 4pin LD Detection Temperature-sensitive Photosensitive Test Socket - FSHH Store
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4 Pcs 3 Pin 650nm Red Laser Transmitter Module Dot Diode Copper Head Sensor Module for Laser Sensor Projects: Amazon.com: Industrial & Scientific
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Does anyone know what kind of laser diode this is? Taken from old PC DVD drive. It has four pins. : r/lasers
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