This it the SparkFun XBee Wireless Kit, the perfect box full of goodies to get you started using XBees. Inside this kit you will find two XBee Modules, one XBee Explorer, one Xbee Shield and a set of R3 headers to solder onto the shield. Our entire goal for the XBee Kit was to make wireless communication simple. Connect one XBee to the shield and your Arduino, connect the other XBee to the Explorer board and your computer, and you’ll be able to seamlessly pass serial data to and from your Arduino wirelessly! Using this connection, you can transmit remote sensor data, or send data from your computer to update a scoreboard, or drive a robot from your keyboard!