?Surge Protection & Overload Protection?This USB wall charger has 490 Joules energy absorbing capacity. It indicates that your devices are protected from voltage fluctuations, surges, and spikes when the "SURGE PROTECTED" indicator lights up. ?Multi Safety Protection?BESHON outlet expander has over current protection, overheating protection, short-circuit protection, and over-voltage protection, and contains 490J surge protection. The wall plug shell is made of superior 100% fireproof PC material and passed the 1582°F fire level test, All make it more durable and have a longer lifetime. ?Compact Size with 3-Side Design?The size of the Outlet Extender is 1.8L * 1.6W * 7H inches. With a 3-side design, this outlet splitter has enough space to fit big plugs without blocking each other, suitable for travel, home, dorm room, and office. ?Smart Charging USB Ports?3 smart USB output is 3.1A total, the single USB-C port can support 5V 3A max, and the single USB-A port support 2.4A max when charging. Built-in intelligent recognition technology, it can detect the charging device and provide the optimum charging speed when charging. ?12 IN 1 Multi Outlet with USB-C?3-side power strip with 9 AC outlets and 3 USB ports can power up 12 devices simultaneously. Compatible with almost all USB devices(the actual current is decided by the demand for the devices).