Product Review

Specification:
Rating Voltage: 12-24V
USB Output: 5V / 4.2A
Interface: dual USB ports
Material: Copper + ABS Plastic
Voltmeter Dimension: 2.1" x 1.4" x 1"
Bracket Dimension: 2.4" x 1.7"
Operating Temperature: -40 to 70℃
Wide Application: cars, motorcycles, ATVs, SUVs, UTVs, Boats, etc
Multi-purposes: supply power for cellphone, tablet, GPS and other USB-devices

Package Included:
1 x Dual USB Voltmeter
2 x Insulated Terminals

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.

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