The ERB300H is a Wireless N300 HD Media Bridge and Range Extender with a built-in 4-Port Fast Ethernet switch that provides greater wireless coverage so more remote Ethernet-enabled devices can connect to a home network. In Client Bridge mode, the ERB300H is ideal for connecting a robotic platform to your existing wireless router and its Internet connection.
900 MHz 3 dBi Rubber Duck Antenna - RP-SMA Plug Connector
SparkFun's minimal design approach to Arduino. This is a 5V Arduino running the 16MHz bootloader.