A remote control system for at least one electric device, each electric device having device identification data, has a handset comprising a handset transceiver, and a base unit having a telephone function to make a call. The base unit has a base unit transceiver that communicates with the handset wireless transceiver bidirectionally, and a primary remote-controller that communicates the electric device bidirectionally to control the electric device. The primary remote-controller has a remote-control transmitter and a remote-control receiver. The remote-control transmitter transmits control data to the electric device by using the device identification data, the control data being used for controlling the electric device. The remote-control receiver receives response data from the electric device in response to the control data.