Before XBee PRO is used, the XBee PRO needs to be
configured first in order to communicate with each other.
Configuration mode on this device is transparent mode (AT)
with 16-bit addressing system. This system using 3 pieces of
XBee PRO. XBee PRO configuration use the X-CTU software
that is specifically provided by the XBee manufacturers. XBee
PRO configurations used are listed in Table 1.[9]