XBee Module - ZB Series S2C - 2mW with Wire Antenna [XB24CZ7WIT-004] : ID 968 : $22.95 : Adafruit Industries, Unique & fun DIY electronics and kits
XBEE X V2 (Stretched Xbee) | Zdrone.co.il
XBEE-X V2 220mm FPV Racing Kit (Titanium Screws) – Helipal Hong Kong
Dfrobot Xboard/x-board (a Bridge Between Home And Internet) V2 Atmega328p Wiz5100 5~12v With Xbee Socket Compatible With Arduino - Demo Board - AliExpress
1. Getting Ready - Building Wireless Sensor Networks [Book]