In this book, we have aimed to make communication between devices via LAN with HTTP protocol on top of the TCP/IP protocol. It enables the users for remote management, controlling and synchronization over the LAN backbone. In this book, we use Ethernet module and Wi-Fi module to develop IoT applications. Authorised user can access it by just typing a URL on their web browser and set time of ringing. A standard tone for bell ringing was recorded and played by Arduino Mega at appropriate times.