1. Input voltage: DC12V 2. Product line length: 170CM (without extension cord) 3. Fast charge output: 5V / 3.4A; 9V / 2.5A; 12V / 2A 4. Maximum power: 30W 5. Material: aluminum alloy 6. Installation hole diameter: install and use within 2.2-2.6CM diameter 7. Wiring instructions: The red wire is connected to the positive pole of the power supply, and the black wire is connected to the negative pole of the power supply 8. Uses: can be used to power most car supplies such as mobile phones, tablets, IPAD, navigation and GPS 9. Heat and corrosion resistance, flame retardant properties, very high safety factor 10. With a voltmeter, you can check the battery usage at any time to prevent safety accidents caused by bad batteries 11. Independent switch can control USB and voltmeter at the same time
