It turns off the standby current automatically when electrical appliance is in standby mode, so as to save power. AC 230V / 50Hz 16A / ... automatically when the electrical appliance is in standby mode, so as to save power. It works in this way. When you ... It is widely applied to PC / Scanner / Printer / Fax for standby power saving.Plug configuration: UK, USA, French, Germany, Swiss, Italian, Israeli ...