Cllena Dual USB Socket Charger 42A 12V Power Outlet LED Voltmeter ON Off Toggle Switch 4 in 1 Functions Panel for Car Marine Boat Rv ATV UTV Truck Camper Red

Color: Black Material: ABS Voltmeter socket dimension: Approx. 2.8 * 1.6cm (Screw Diameter * Height) USB socket dimension: Approx. 2.9 * 4cm (Screw Diameter * Height) Power socket dimension: Approx. 2.9 * 4cm (Screw Diameter * Height) ON-OFF Toggle Switch: Approx. 2.9 * 1.8cm (Screw Diameter * Height) Four hole panel dimension: Approx. 10.5 * 8.7 * 0.5cm (L * W * H) Package Weight: 120g / 4.2oz Package Contents: 1 * Four Hole Panel Base 1 * Dual USB Socket 1 * LED Voltmeter 1 * Power Outlet 1 * ON-OFF Toggle Switch 9 * Insulated Terminals 4 * screws Please Note: Regarding the each usb port 2.1A, it meant the maxi ampere of each usb port is 2.1A, if your device has no 2.1A itself, you use the ammeter could not test 2.1A. and you can use the device has 2.1 itself, for example: you can use ipad to test it, it can prove each usb port is 2.1A.