LED Brightness Controller and Adjustable Power Supply Module Versatile Use: Designed to adjust the brightness of singlecolor LED lights, compatible with 3528, 5050, and 5630 LED types. Ideal for general lighting, creating holiday atmospheres, powering fans, car lights, and car fans. Adjustable Voltage Output: Features a DCDC stepup and stepdown power supply module with a builtin 2digit LED display that shows output voltage in real time. The potentiometer allows smooth and precise voltage adjustment. Wide Voltage Range: Supports output from 1.3V to 12V. Includes on/off switch control. Delivers up to 3W output between 1.3V and 5V, and up to 6W output between 6V and 12V, ensuring reliable performance for various devices. Convenient Cable Length: Equipped with a 130 cm cable, suitable for replacing 9V AA or AAA battery setups. The cable can be modified by cutting off the 5.5x2.1 mm connector and wiring directly to your device for flexible installation. Practical Applications: 1. Adjust LED brightness in home or office lighting systems for ambiance. 2. Power small DC fans in vehicles or desktop setups with precise voltage control. 3. disposable batteries in electronic projects with a cleaner, adjustable DC power option. Compatibility and Performance: Works with singlecolor LED strips, small DCpowered devices, and electronic DIY projects requiring specific voltage outputs. Designed for stability, compact size, and ease of use, making it a reliable choice for varied applications.