Item Type: Car Switch Panel Material: ABS Color: Black Input Voltage: 12-24V Output Voltage: 5V Output Current: 2.1A 1A Applicable Charging Range: Applicable to All 12-24V Automobiles, Motorcycles, Yachts, Boats, Lawn Mowers, Tractors, Etc. Size: Approx. 170mm x 97mm / 6.7 x 3.8in Package List 1 x Switch Panel 4 x Screw 36 x Heat Shrinkable Tube 1[Waterproof Function] Frosted texture. With waterproof design, it can effectively prevent rainwater from entering and damage the voltmeter 2[Multifunction] With output short circuit protection, overload protection, reverse polarity protection and multiple protection, it is safer to use and very convenient to drive 3[Intelligent Control] The intelligent control chip can prevent fire and high temperature and avoid damaging the equipment during charging 4[Double Port Output] With waterproof cover. When not in use, it can be covered with rubber cover to prevent dust and water 5[Scope of Use] Can be used with USB to support a variety of charging electronic products. Applicable to all 12?24V automobiles, motorcycles, yachts, boats, lawn mowers, tractors, etc