Wide input voltage range of 3.5V to 30V, making it suitable for various LED applications including 3.7V, 5V, 6V, 9V, 12V, 18V, and 24V.Adjustable output current up to 660mA, allowing customization of LED brightness by changing the RCS resistance.High efficiency of up to 94%, ensuring minimal energy loss during operation.PWM dimming capability for precise brightness control and single pin ON/OFF functionality.Inherent open-circuit LED protection and soft over-temperature protection for enhanced safety and reliability.This 3.5-30V Step-down HB LED Driver Module is designed for a variety of low voltage LED applications, including automotive lighting, illuminated signs, and stage lights. With a maximum output power of 20W and a typical output current accuracy of 3%, it provides reliable performance. The module features hysteretic control with no compensation, ensuring stable operation. Ideal for replacing low voltage lights, this driver module is a versatile solution for your LED lighting needs.Color: WhiteMaterial: PCBSpecification: 660MAPackage Contents:10*Step-down HB LED Driver ModuleOnly 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.