12V Power Supply, AC 110V 220V to DC 0-12V 0-40A 480W Buck Converter, Volt Amp Adjustable Adapter Regulated 5V 9V 12Volt Switching Voltage LED Transformer Charger for Computer CCTV Lab

Voltage and Current Adjustment The input voltage can be set to 110V or 220V. It offers a broadly adjustable output voltage range of DC 0-12V. This power supply is suitable for 2V, 3V, 5V, 6V, 9V, and 12V devices. The voltage adjustment precision is 0.1V. Please note: The maximum current is 40A. The output current can be modified via the built-in potentiometer. Regardless of the voltage setting, the maximum current must not exceed 40A. It can be used with devices rated for 5A, 10A, 12A, 24A, 36V, or 40A. Ensure the connected device operates below 40A. Hardware This buck converter comes with an LED screen, a heat sink, and a cooling fan. The LED screen clearly shows the output voltage and current. The heat sink and cooling fan work in tandem to keep the operating temperature within safe limits. When operating at high power, the cooling fan turns on automatically with very little noise. Easy Operation This unit requires no installation. After wiring it up, it is ready to adjust the output, making it highly convenient. The adjustment potentiometer is recessed into the unit. Simply turn the potentiometer to adjust the output parameters. Protection It includes Over Load Protection, Over Voltage Protection, and Short Circuit Protection to prevent damage to your connected devices. Note: The default input voltage is set to 220V. Before use, please switch the input voltage selector to 110V or 220V according to your local mains voltage. Wide Application This variable power supply has diverse applications. It can serve as a 2V, 3V, 5V, 9V, or 12V power source for RVs, cars, laptops, computers, labs, CCTV systems, and more