Abstract
Since the modern life with rapid pace, with the hope to save time and promote efficiency, it is people's desire to control domestic appliances so as to improve living standard and efficiency and comfort living environment. On the basis of fully use of modern and advanced electron from abroad, this article designs the telephones' intelligent control module not through reconstruction of telephones or special wiring but only through connecting user's telephone wire to telephones' remote control and warning device of which output will be connected to the telephone. Intelligent controller in this system controls the intelligent functional modules through power line carrier of DTMF coding.
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