Waterproof and dustproof: the cigarette lighter mother seat has a waterproof cover, which effectively protects the internal circuit and prolongs the service life 15A fuse: the cigarette lighter extension cord has Replaceable 20A fuse, safer to use. Cigarette Lighter Extension Cord, 4M (13 Feet) Length, 17AWG Diameter Versatility: Suitable for a variety of vehicle equipment, tire inflation pumps, car audio, vacuum cleaners car, car refrigerators, etc. High efficiency: thickened and thickened fiber core, stable current transmission and high work efficiency. The red line is positive and the black line is negative. High-quality materials: 12V-24V high-power output, using thickened bakelite material with high hardness, high temperature resistance and heat dissipation, the manganese steel shrapnel elasticity is better and more stable, with indicator light