This circuit uses boost circuit input 24V universal power. Very good adaptation to the power supply, which is an advantage over the circuit. The default driver NUBM08 module (8 groups), Simple wiring. Input and output are two CABLE OK. Other applications: If you want to drive 3 NUBM08 diodes, you can change the input voltage to 12V input, and the output voltage is adjusted to 13.5V 3A; If you want to drive 4 NUBM08 diodes, you can change the input voltage to 12V input and the output voltage to 18V 3A. Specification Description: Circuit control: 24V boost circuit, constant current constant voltage input Output Specifications: Max 4A Scope of application: 445/450/455/465/520/525nm green and blue laser module drive circuit Frequency control: 0-20Khz Modulation voltage: 0-5V (0V off, 5V on) Input voltage: 24V (18-26V) TTL modulation description: 0-5V voltage signal Colour:As Shown Material:PC+metal Package Contents: 1x Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.