Patent ID: 8129859

Claim:
An extension cord with wireless timing function and applying a wireless timing system adopting distributed control, comprising: a receptacle housing having more than one flush plug receptacle provided thereon and being internally provided with a plurality of normal-closed electronic relays in a number corresponding to that of the flush plug receptacles, a current converter electrically connected to the electronic relays, and a power switch electrically connected to the current converter; and the electronic relays being electrically connected to the flush plug receptacles; a programmable logic controller arranged inside the receptacle housing and electrically connected to the electronic relays for controlling close-circuit (ON) state and open-circuit (OFF) state of the flush plug receptacles; a wireless transmission module arranged inside the receptacle housing and electrically connected to the programmable logic controller for receiving a wireless transmission signal from a remote device and transmitting the received wireless transmission signal to the programmable logic controller; a power cord having an end connected to the receptacle housing to electrically connect to the power switch and the programmable logic controller inside the receptacle housing; the power cord having another end connected to a power plug for plugging in a corresponding AC power source; and an operation and control module being provided on one face of the receptacle housing and electrically connected to the programmable logic controller; and wherein when the power switch is turned to off, a timing setting memory in the programmable logic controller automatically resets and the receptacles on the extension cord are set to the close-circuit (ON) state; and when the power switch is turned to on again but the programmable logic controller does not receive timing settings from the remote device, the receptacles on the extension cord will remain to the ON state.