"Multifunction Panel: This 6 port panel has two USB ports and LED voltmeter and 12V 3 pin socket and switch toggle switch. They are interchangeable and you can replace each port with an extra USB port or all Other applicable ports. Wide compatibility: suitable for 12V or 24V equipment such as cars, ships, ships, trucks, RVs, ATVs, RVs, vehicles, etc. Widely used in mobile phones, tablet computers, GPS, digital cameras, PDAs, etc. USB socket Safety: Passed CE, ROHS certification, with overcharge, overload, short circuit protection to ensure safe charging. Built-in reverse terminal protection to ensure that the circuit will not burn out when wiring is wrong. Voltage monitoring safety line: When driving, the LED voltmeter shows 0 -24V voltage, when the voltage is normal, it can be reminded to ensure driving safety. Flexible charging: 3 cigarette lighter sockets are enough to use various handheld devices in 12V or 24V vehicles at the same time, such as GPS, driving recorder, DVD player , FM transmitters and other small devices."" 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.