[Multi-Functions Panel]- Dual 2.1A USB Socket & Voltmeter + 12V Outlet + Toggle Switch.[Wide Application]- Fit for Car, Marine, Boat, Truck, RV, ATV, Camper, Vehicles and other 12/24V Devices.[Flexible Charging]- Dual USB socket & 12V power outlet enough for simultaneous use of a variety of portable appliances, like GPS, Dash Cam, DVD Player, FM transmitter, and other small appliances.[Voltage Monitor Safety Driving]- The LED voltmeter display 0-24V voltage when driving which can remind you whether the voltage is at a normal level, ensure driving safety.[Package includes]- 1 x Dual USB Charger & Voltmeter; 1 x Cigarette Lighter Socket; 1 x Red Toggle Switch; 7 x Insulated Terminals; 4 x Screws (Not Included Connection Wires)Product Description Specification: Color: Black Material: Nylon + Metal Power Input: DC 12-24V USB Socket Output: 5V/2.1 & 5V/2.1A DC Voltmeter Display Range: 0 – 24V DC Power Outlet Output: 12V/8A DC ON-OFF Toggle Switch: 12V/20A DC Package Included: 1 * Dua