Features: 【Fade-in/Fade-out Function】Supports configuring fade-in and fade-out durations, enabling smooth change for LED strips and avoiding abrupt switching states. 【Softly Start/Soft Stop】Gradual brightness changes during power-on and power-off, ideal for night-time illuminating or applications requiring eye protections. 【Dimming Function】The module features dimming capability, enabling brightness adjustment via Pulses Width Modulation signals. 【Overload and Short-Circuit Protections】Built-in safeguards prevent module damage from overloads or short circuits. 【Easy Installation】Compact design facilitates straightforward connection to LED strips, making it suitable for projects. Specifications: Component: ABS. Size: about 40x17mm/1.57x0.67in Weight: 10g. Quantity:1/2/3pcs [Power ranges] not more than 100W. [Brightness Adjustment] The red switching on the board is used for brightness adjustment. After the brightness is adjusted, it is memory. The brightness of the light next time you turn on the light is the brightness set last time. [External button] External buttons are the function of turning on and off the lights. Package Includes: 1/2/3pcs Light belt drive module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.