DTMF based automation

DTMF based Automation (Switching)

          As technology is advancing so houses are also getting smarter. Modern houses are gradually shifting from conventional switches to centralized control system, involving remote controlled switches. Presently, conventional wall switches located in different parts of the house makes it difficult for user to go near them to operate. Even more it becomes more difficult for elderly or physically handicapped people to do so.

     the DTMF technology is one of the easiest and simple technique to implement home automation. by this method we can switch ON / OFF of any of the electric appliances in home by pressing keys on mobile keypad. 

** Use variable resistors (POTS) for better output.

CM8870 DATA SHEET (Click Here)

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