W5100 Ethernet Shield for Arduino

The W5100 Ethernet Shield enables your Arduino board to establish a wired Ethernet connection on a network to communicate over the internet or with other devices on the network. It plugs directly into an Arduino Uno or Mega (or other board with compatible pin-layout) and is very easy to use thanks to the wide support and compatibility with the official Arduino Ethernet library. It also features an on-board SD card reader for easy use in data logging projects or to store files for serving over the network. These features make it suitable for many IoT and home-automation projects.