The internal circuit board adopts precision SMT process, with stable performance and high efficiency. Sealed silicone case, waterproof, dustproof and shockproof. Single USB output port, convenient for powering electronic devices. With overvoltage, overcurrent, overheating, short circuit protection, it can work normally after returning to normal. Widely used in LED screen, car GPS navigation, MP3, MP4, car DVD, audio, electronic dog, etc. Type: DC-DC non-isolated step-down module Input voltage: 8-22V Output voltage: 5V 0.25V Output current: 3A Output power: 15W Conversion efficiency: 96 percent Boost Converter Regulator DC-DC 12V to 24V 10A 240W DC Boost Converter 12V to 24V DC-DC 3A 72W AC 12V 24V to DC 5V Buck Regulator 1A AC 12V 24V to DC 5V Buck Regulator 5A DC to DC Buck Converter 36V-72V to 12V 10A 120W Colour: Black Material: ABS Size: 30cm Package Contents: 1 x Buck Converter Only the above package content, other products are not included. Note: Light 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.