SO-TECH ST-105U is a high quality extension board. This office power center features a surge protector with charging station. You get two universal sockets and three USB charging ports. You can connect up to 2200W on this board. Even the heavy appliances in the house can be connected (Refer to the packaging). All components used are ESMA certified. Reliable copper/brass alloy strip keeps operating temperature low. With automatic shutter protects children from risk of electrical shock. High impact fire insulation can resist up to 40°C. When the current is beyond 10A, the overload protector will automatically cut off the power, to protect the safety of the extension socket and electrical products.