CONNECTION BOX： 

Used by frequently by the comsumers ,the connection is the main position protected by branch electric current. The box of the company is installed the auto-air swith inside to ensure shunt overloading and short circuit protection.The socket attaches two pieces of 65 Mn spring steel slices ,which guarantees the effctive elastical contact after over 200 times connections.If branch electric current should be increased,you can add sockets in the box and change the switches.