This item is a DIY four hole panel base which includes 2.1A Dual USB Socket, Voltmeter, 12V Outlet and Toggle . It will make your vehicle more modern and more practical. Easy to install, convenient to use. Widely used for , truck, Rv, ATV, boat, etc. The precise design insures its practicability and working performance. Features - Shell Color: Black - Material: ABS - Size: Approx. 12 x 9cm/ 4.7 x 4.7 x 3.6 inches (LxWxH). - USB Output: DC 5V / 3.1A. - LED light color: Green - Power Outlet: DC 12V. - Voltmeter Display Range: 6-30V. - with maximum endurance to ensure durability. - Easy to use and install with . - Dual USB charging ports with protective for great protection. - Four Functions Panel for , Boat, Marine, RV Truck, Camper, Vehicles, GPS Mobiles, etc. - The can so that it will terminate any by the voltage meter or converter inside the USB power outlet when switched off. Package list: 1 x Lighter Socket 1 Voltmeter 1 x Dual USB Charger 1 x Toggle 8 x Insulated Terminals 4 x Screws.