The document describes a home automation system project that allows controlling home appliances via Bluetooth from a smartphone. The key components are an Arduino Uno microcontroller, Bluetooth module, 4-channel relay board. The system allows remotely turning appliances on/off like lights and fans. It discusses the working, including an Android app transmitting commands via Bluetooth to the Arduino which controls the relays. Benefits are security, energy efficiency, and cost savings. The budget is 5000 RS and code is included to interface the components.