Arduino Bluetooth and relay to control the appliances connected to 220V. On / Off and Interval time can be assigned easily. Before run the app, activate the Bluetooth pairing the smart-phone and HC-06 Bluetooth module. A short circuit or electric shock when connecting the KY-019 relay. Arduino source code and circuit can be downloaded from the link below.
The app is completely safe to download. C2design designed Bluetooth AC Controller that falls into the Productivity category. Over 1K users set up the tool and the most recent update was released on Aug 17, 2015.
On Google Play, this application was rated 3 by its users. Download the setup package of Bluetooth AC Controller 1.0 at no cost and read users' reviews on Droid Informer. The app works flawlessly on Android 2.3 and above.