This USB Quick Charger Socket has overheat, overcurrent, overcharge, reverse polarity protection and short circuit protection. The built-in fuse and intelligent control chip ensure charging safety. This Type-C PD&QC 3.0 USB fast charger is designed with Type-C PD and fast charging USB 3.0 power socket, which can quickly charge two devices at the same time. PD output allows people to use USB-C to USB-C type cables to quickly charge mobile phones This 12v usb socket has a built-in digital green LED voltage monitor, which displays the real-time voltage status of the vehicle battery, helping you find the USB port quickly and conveniently in the dark or at night. This USB Multi Port Adapter is easy to install. "+" stands for positive pole, and "-" stands for negative pole. Connect the wiring to the corresponding interface. USB car charger socket 12v is applicable to 12-24V automobiles, boats, boats, ATVs, RV, motorcycles, golf carts, ATVs, RV, buses, trucks, etc. Suitable for charging mobile phones, tablets, Airpods, GPS, cameras, PSPs, car DVRs, rechargeable headphone