Electop 12V USB Outlet Socket Panel, Waterproof Cigarette Lighter Socket Dual USB Car Charger 2.1A & 2.1A with LED Voltmeter, 12 Volt Power Socket Adapter DIY Kit for Car Boat Marine Motorcycle RV

The voltmeter monitors the voltage of your car in real timeDual 5V/2.1A USB charging ports, which can be connected to fast charging at the same timeWith waterproof cigarette lighter socket, you can charge most small electronic devices in your carYou can install it in any position: vertically, horizontally or under the dashboard or on any flat surface, etcUse outdoor environment standards for structure and circuit designSuitable for DC 12-24V car, boat, marine, motorcycle, ATV, RV, truck, golf cart and morePower connecting wires, usb cable and device should support fast charging by connecting two devices at the same time.The blue indicator light will show up after the item is connected to the battery.This USB cigarette outlet support input voltage DC12V-24V, cannot be used in home as power adapter.