An android app is developed to issue commands through Bluetooth. The app checks for a particular Bluetooth device (physical address of Bluetooth dongle connected to Arduino) to be connected to the phone. On successful connection, proper commands are issued when the radio buttons corresponding to the electrical appliances are tapped. The commands received by the Bluetooth dongle are passed to Arduino for further processing. The commands are interpreted by Arduino and the corresponding relay is actuated. The electrical appliance connected to the relay switches ON or OFF accordingly.