niceEshop(TM) Car Digital Voltmeter Dual USB 2 Port Power Socket Three Hole Panel(Black) Muti-Funtional 3 Hole Panel - Come with digital voltmeter, dual USB charging output and one cigarette lighter socket 12V-24V Widely Compatibility - Fit with any 12V-24V RV camper, motorcycle, boat, trailer, ATV, riding mower, tractor or offroad vehicles Dual USB Fast Charge for Electronics - Widely used with electronics products for power supply, such as GPS, cell phone, dash cam, tablets etc; One DC 5V 2.1A fast charge USB port and one DC 5V 1A port Accurate Digital Voltmeter - Indicates the charging state, track the voltage accurately Water Resistance Design - The outputs have rubber covers to keep rain and splash water out