In this project we can control any electrical appliances through mobile or landline from any part of the country. In this project one base unit is connected to the basic landline in parallel with the land line phone.. When we want to control any electrical appliances through outer phone then first we dial the home number, bell is ringing and after few bell phone is automatic on and switch on the base unit to operate. Now we press the single digital excess code, if the excess code is ok then unit give a tone pulse and switch on the base unit. Now again we press the switch on/off code to on/off any electrical appliances. With the help of this code unit is on and base unit give a acknowledge pulse for on and off separately.
Complete circuit is divided into three parts.