XBee
 XBee is the brand name from Digi International for a family of form factor compatible radio modules. The first XBee radios were introduced under the MaxStream brand in 2005 and were based on the 802.15.4-2003 standard designed for point-to-point and star communications at over-the-air baud rates of 250 kbit/s.Two models were initially introduced—a lower cost 1 mW XBee and the higher power 100 mW XBee-PRO.