This is an Ethernet Board that plugs directly into any Arduino UNO or other Arduino Board allowing it to connect to the internet through an Ethernet connection. This allows you to control the Arduino through the internet allowing it to post to the internet and react to information it receives from the internet.

Product Features:

No soldering required
Based on ENC28J60 Ethernet Chip
Works with the latest Arduino Ethernet Libraties
Works with an RJ45 cable
Network Interface HR911105A
Supply Voltage: 3.3 V
25Mhz crystal oscillator
Comes with a breakout cable so you can plug it into your Arduino (requires a male connection on the Arduino or male to male jumper wires)

Dimensions: Depth 15mm Height 51mm Width 19mm Weight 11g