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Lite On LTLD505T Laser Diode, 650nm, 2.6VDC, Algalnp, 5mW (Pack of 2): Amazon.com: Industrial & Scientific
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3 5V Adjustable Beam 650nm 5mW Red Point / Line / Cross Laser Module Head Glass Lens Focusable Industrial Class|Instrument Parts & Accessories| - AliExpress