Cllena Dual USB Socket Charger 21A21A LED Voltmeter 12V Power Outlet 5 Gang ON-Off Toggle Switch Multi-Functions Panel for Car Marine Boat RV Truck Camper Vehicles Blue

Specification: Color: Black Material: ABS, Aluminium Plate Voltage: 12V-24V USB socket output: DC 5V / 4.2A Power outlet: DC 12V Voltmeter display range: 0 - 24V Overload protection: 12V - 24V, 15A DC Operating Temperature: -25 degree to 80 degree Package Contents: 1 * Multi-Functions Panel 1 * Labels 4 * Screws 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.