Dual USB Charger Switch Panel 4 in 1 Car Adapter 12V Outlet with LED Voltmeter (Double USB 4,2 A) charging connector Our car charging socket is equipped with 2 USB ports (5V/4,2A). Two devices can be charged at the same time. (Car cigarette lighter socket) Car cigarette lighter socket can charge 12-24 VGA current, GPS device, seat heating, vacuum cleaner, humidifier, pump, air purifier, etc. (Safe power switch) Updated USB connector with on/off switch to save energy, protect devices and extend the life of devices. It stores electricity and does not consume energy when turned off. (LED Voltage Indicator) With digital LED voltage monitoring, you can monitor the status of your vehicle battery and electrical system in real time. The light helps you quickly and easily find USB ports in the dark. (Wide Application andamp; Installation)Our USB charging socket with aluminum alloy housing and CE/FCC certificate. Fits most vehicles with DC voltage 12-24V. Specification Power Input: DC 12 V-24 V Output of each USB port: DC 5 V/4,2 A Power socket: DC 12 V voltmeter Display Range: DC 5-30 V Operating temperature: -25 ℃ - 80 ℃ Material: ABS, aluminum plate. Weight: 130 g Attention The voltage can only be displayed when the car charger is connected to the power supply and the button is on. Dual USB charging ports With two 5V USB charging ports (2,1A/2,1A), you can charge 2 devices simultaneously at high speed. Power socket 12 V The socket offers a total power of up to 12V, which is sufficient for daily use of various portable devices in the vehicle. LED Digital Voltmeter Monitor the electrical system of the vehicle, you can know the condition of the vehicle at any time. Switch on. /off Equipped with switches for energy saving and equipment protection, which can extend the life of the device. Easy to change and make yourself It is easy to disassemble and can be connected according to your DIY requirements. Easy to install The clamps on the back are marked "i"-" for the positive and negative poles. Widely used Not only does it fit DC 12-24V cars, but it is also perfect for boats, ships, caravans, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.