It is a device that allows you to easily get electricity from the fuse box of your vehicle without making any cuts or additions to its cables. In-car camera, navigation, charging, cigarette lighter, rope neon glove strip, etc. You can draw electricity for applications. Application:Remove the fuse from which you want to get electrical connection. Insert the fuse you removed into the fuse doubler. Insert the fuse doubler into the fuse holder you removed. Features:Applicable voltage: 12V-24V, maximum up to 32VApplicable current: 1A 2A 3A 5A 7. 5A 10A 15A 20A Package Content: 5Pcs Blade Fuse Multiplexer (Fuse not included).