Laser Diode Ld Driver Board With Ttl/pwm Modulation Current 1a - 5a 12v Voltage Current Adjustable 405nm 445nm 450nm Universal - Led Chips - AliExpress
Blue/green Laser Diode Constant Current Drive Ttl Modulation Current 0-500ma Adjustable - Buy Constant Current Drive,Diode Drive,Adjustable Drive Product on Alibaba.com