Bee USB to Serial Adapter V2.0 Board + XBee S1 120M Wireless Data Transmission Module for Arduino
Xbee module is a ZigBee wireless module technology communicate with the microcontroller through inter-serial; Can very quickly connect device to a ZigBee network; Adopts 802.15.4 protocol stack; Supports point-to-point and point-to-multipoint communications and networking; Antenna is wire antenna simple and convenient. The adapter also could support XBee interface.