This is the XBee 1mW Wire Antenna Series 1 XB24-AWI-001 module. It is Easy to use. These modules can communicate point to point, from one point to a PC, or in a mesh network. Just power on and start communicating and the XBee 802.15.4 modules are the easiest-to-use, most reliable and cost-effective RF devices we’ve experienced. The 802.15.4 XBee modules provide two friendly modes of communication a simple serial method of transmitting/receive or a framed mode providing advanced features. XBee is ready to use out of the package, or they can be configured through the X-CTU utility or from your microcontroller.