2500mW Blue Laser Module For DIY Laser Engraver 445nm - 12Vdc ...
445nm 2500mW focusable blue laser module, with TTL &PWM functions. Aircraft aluminum heatsink with cooling fan ensure long working time continuously. Equipped with constant-current driver board ensure stable output optical power, low heat no external driver board needed, easy to use. 3 pins plug, 2.54-3P input interface, TTL/PWM drive mode ...