638nm 400mW Orange-Red Dot Focusable Laser Diode Module 12V Driver TTL

638nm 400mW Orange-Red Focusable Dot LaserModule w/ TTL. Wavelength: 638nm. 1x 638nm 400mw Laser Dot Module. Specification: Output Power: 400mW. Focusable: Yes. Can use it with TTL Modulation (DC5V). Note: It uses a multimode diode, the laser shape is adjusted from rectangle to a fat dot (Relatively).

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