Fast Charging: The 12-volt power outlet includes a 36W QC3.0 USB-A port and a 55W PD USB-C port. This RV USB outlet can quickly and efficiently charge all Android and iOS devices LED Voltage Display: The voltmeter is built in the center of the USB charger outlet. Once powered, it clearly displays the current voltage readings, making it easy to monitor the vehicle's voltage condition Multiple Protections: Rocker switch usb provides overload, overcurrent, and short circuit protection to ensure safe charging. Equipped with a fully sealed protective cap to guard against dust and water Simple Installation: Simply snap this rocker switch-style USB charger into a rectangular hole measuring approximately 0.87in * 1.46in, then connect the wiring harness Wide Application: This 12V/24V USB rocker switch outlet is suitable for use in cars, buses, boats, and more