Full Protection Socket Panel: CE and RoHS certified. 12V car charger with overcurrent protection, overheat protection and overload protection, Rocketek waterproof car charger panel will automatically shut 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 4 in 1 design with dual 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 during charging. The real-time LED voltmeter can remind you whether the voltage is at the normal level to ensure driving safety. It helps you monitor the electrical safety of your machine and allows you to easily find and check