A remote controlling system for an electric device includes one or more electric devices for communicating with a remote controlling device through a wireless communication network. The one or more electric devices transmit state information to the remote controlling device according to a state request command from the remote controlling device, and control a predetermined operation according to an operation control command from the remote controlling device. The remote controlling device is supplied with power by a common power source for transmitting the state request command to the electric device selected by the user, receiving the state information from the electric device, and displaying the state information, or transmitting the operation control command to the electric device.