Importance

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Abstract

There is disclosed a system for centrally controlling a plurality of electrical apparatuses in which radio communication is performed between a host unit and terminal units registered in the host unit and each terminal unit is disposed for each of the plurality of electrical apparatuses. The terminal unit controls the corresponding electrical apparatus based on a control signal from the host unit by the radio communication, and detects the state of the electrical apparatus to report it to the host unit. The radio communication is not directly performed between each electrical apparatus and the host unit, and the terminal unit is interposed therebetween, so that the radio communication is performed between a centralized control device and a terminal device. Therefore, electrical apparatus do not require a radio transmitter/receiver mechanism, and is only provided with a function by which data can be exchanged the terminal unit. When the electrical apparatus is non-applicable to the system, a power supply control unit is provided for controlling a power supply of the electrical apparatus, and connected to the corresponding terminal unit, so that the power supply of the electrical apparatus non-applicable to the system is controlled by controlling the power supply control unit via the terminal unit.

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First Claim