The Automation system is basically an embedded one. The main objective of the system is to uniquely control home appliances from any part of world. This requires a unique product, which has the capability of distinguishing different person. Now if we want a system to control aome appliances from any part of world then it is possible using technology DTMF.
During phone calling, if any button is pressed, a tone corresponding to the button pressed is heard at the other end of the call. This tone is called "Dual Tone Multiple-Frequency" (DTMF) tone. The Decoder decode this DTMF tone with the help of the phone stacked sound jack. This decoded information send to the Microcontroller and appropriate operation performed. In this system we will provide you 8 devices control from mobile phone with complete hardware and documents.
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