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, motor, speaker, auto GPS navigator, car DVD, hard disk player, MP3, MP4, dashcam, solar panel, LED strip lights, LED display, electric fan, camera, light, toy cars, etc. Easy DC-DC/AC-DC changing. Note -- Positive pole and negative pole of input and output cannot be connected reversely. Dimensions: 5.12 x 3.03 x 0.63 inches