Full Socket Panel Protection: CE and RoHS certified. 12V car charger with overcurrent protection, overheat protection, and overload protection, Rocketek waterproof car charger panel automatically shuts off when overloaded, preventing your device from overheating and overcharging. 【Multifunctional Design】The multifunctional dual USB socket panel allows you to get rid of tangled wires and make your car cleaner. Rocketek switch panel features a 4-in-1 design with two 4.2A USB charging ports, 1 LED digital voltmeter, 1 12V cigarette lighter socket, and 1 LED rocker switch. The perfect control panel, always responsive to your machine and charging. 【LED Digital Voltage Monitor】The USB socket panel displays the current detected by the intelligent circuit in real time while charging. The real-time LED voltmeter can remind you if the voltage is within normal range to ensure driving safety. It helps you monitor the electrical safety of your machine and allows you to easily find and check connections at any time of the night. 【Dual USB Ports & Independent Rocker Switch】The dual 4.2A USB charging ports allow you to power two devices at the same time. It can charge mobile phones, GPS navigators, cameras, music players, and other electronic devices to meet various charging needs. The charging panel is designed with an independent switch, which can save energy and extend the product life. You don't have to worry about electricity. Wide Compatibility: This switch panel can be widely used in cars, boats, RVs, trucks, and can charge your iPad, iPhone, iPod, GPS, digital camera, or any other device. Easy to use. Rocketek car sockets are RoHS, CE and FCC certified, please use them with confidence. 24-month warranty, no hassle for returns or refunds.