405nm 445nm 450nm Laser Diode LD Driver Board 12V 2W Step-Down Constant Current Drive Circuit of TTL Modulation Power Supply: Amazon.com: Industrial & Scientific
445nm Blue Laser Diode Module (NICHIA NDB4116 SOURCE LASER)
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
405nm 445nm 450nm Laser Diode LD Driver Board 12V 2W Step-Down Constant Current Drive Circuit of TTL Modulation Power Supply: Amazon.com: Industrial & Scientific