About this item 8-22V to 3-15V converter input voltage DC 8-22V; output voltage DC 3-15V; output current 3A Aluminum case and silicone sealed design - High conversion efficiency, low heat generation, good heat dissipation, high safety. Waterproof, anti-shock, anti-humidity and dust-proof, more durable. Protection - It supports 3 intelligent security protections including over-current protection, over temperature protection, and output short circuit protection. Widely Application - Compatible with car audio, motors, speakers, auto GPS navigators, car DVD players, hard disk players, MP3, MP4, dashcams, solar panels, LED strip lights, LED displays, electric fans, cameras, lights, toy cars, etc. Easy DC-DC/AC-DC changing. Size: 3.82 x 2.91 x 0.87 inches.