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445nm 450nm 500mw Blue Laser Dot Module 12V TTL / 33x33x50mm & Long Time Working: Amazon.com: Industrial & Scientific
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445nm 450nm Blue Line Light Module Line Generator Projector Diode for Laser Swamp Pond Halloween Haunted House Laser Lighting Effects 1668: Amazon.com: Industrial & Scientific
5V-8V Power Supply Driver Board for 445nm 447nm 450nm 500mw-1000mw Blue Laser Diode Module Step-Down Circuit Board: Amazon.com: Industrial & Scientific