COSWALL Wall PC Panel Double Socket 16A EU Electrical Outlet Dual USB Smart Charging Port 5V 2A

COSWALL Wall PC Panel Double Socket 16A EU Electrical Outlet Dual USB Smart Charging Port 5V 2A Output
Principle of USB charging port: when you use USB connector insert into USB port on the socket, the LED indicator and the power from USB port will be on automatically, the USB charging port begin to charge for phone, when the battery of phone is enough, the power and the indicator from USB port will be off automatically, at the same time, if you remove the USB connector from the USB port, the LED indicator and the power from USB port will be also off automatically! so the new version USB charging port is smart!