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Focusable 4W 808nm 810nm Infrared IR Laser Diode Module Component for Laser Illumination Device + 12V Power Supply TTL: Amazon.com: Industrial & Scientific
Amazon.com: LEHO 7WCNC Laser Head Blue Laser Module Adjustable Focus with PWM TTL Suitable for CNC Engraving Machine (33×33×70mm) : Arts, Crafts & Sewing
Focusable 980nm Infrared IR Adjusted Laser Dot Diode Module 3V-5V with TTL 0-15KHz 12x30mm: Amazon.com: Industrial & Scientific
4W Industry Laser 445nm/447nm/450nm 4000mW Blue Laser Dot Module Diode NDB7A75 w/ TTL0-20kHz & Fan Cooling & Long Time Working: Amazon.com: Industrial & Scientific
Amazon.com: LASER TREE 20W 40W 80W Interface Adapter Board Transfer Board for Compatibility of Different Pins and Voltages Between Modules and Machines/Control Boards
Amazon.com: ANNOY TOOLS Engraving Module,500mW Output Power Laser Engraver Accessories TTL/PWM for CNC Machine 3018pro/3D Printer/Arduino (500mW)