Safety Door: Has A Safety Door For Multiple Protection. The AC Socket Has A Built-in Safety Gate To Protect Children From Accidental Electric Shocks That They Always Suffer From Accidental Electrocution. Safe Charging Design Provides Protection That Smart Chip + Built-in Fuse Double Protection Fast Charging: Dual AC Power Sockets For Quickly Powering Smaller Devices Such As Laptops And Tablets Or Any Other Household Appliance, And 2 Smart USB Ports For Charging USB-powered Devices. It Automatically Detects Your Devices To Provide Optimal Charging Speed And Is A Good Choice As A Must-have Car Accessory Or For Camping, Outdoor Needs Or On A Driving Tour. Multi-Protection: Featuring A Rubber Power Cord With Improved Heat Resistance And No Cracking At High Temperatures. The Built-in Fuse Protects Your Device And The Comprehensive Multi-protection Safety System Includes Overcharge Protection, Short-circuit Protection, Temperature Control, Under-voltage Charging And Over-voltage And Overload Protection. It Helps To Protect Your Charging Device And Prolong Its Use.