1Characteristic: The fuse box has positive and negative terminals, meaning each positive terminal screw has a negative terminal screw, ideal for branch circuit protection and has good electrical conductivity. 2LED Indicators: This fuse box has red LED indicators for each circuit, when a blown fuse is detected, the associated red LED warning light will light up immediately, reminding you to check and replace the blown fuse. 3Premium Pbt: The fuse block is made of environmentally friendly Pbt material, which has high mechanical strength, good insulation, heat resistance and flame retardancy, and will not have problems such as breakage, deformation, burnout or short circuit. 4Waterproof Cover and Sticker: With a transparent waterproof protective cover and label sticker, it can also help you quickly identify problem circuits and save time. 5Wide Application: 12V marine blade fuse box can be used for Atc and Ato (medium size) fuses, and it is universally suitable for 12?24V car Rv boat and yacht.