Digi XBee User Manual

AT commands RF interfacing commands
XBee/XBee-PRO® S2C ZigBee® RF Module
232
Parameter range
0 - 0xFF
Default
N/A
NK (Network Encryption Key)
Set the 128-bit AES network encryption key. This command is write-only and cannot be read. If set to
0 (default), the device selects a random network key.
Parameter range
128-bit value
Default
0
KY (Link Key)
Sets the 128-bit AES link key value that the device uses for encryption and decryption. This command
is write-only and cannot be read. If you set KY to 0 the coordinator transmits the network key in the
clear to joining devices, and joining devices acquire the network key in the clear when joining.
Parameter range
128-bit value
Default
0
RF interfacing commands
The following AT commands are RF interfacing commands.
PL (TX Power Level)
Sets or reads the power level at which the device transmits conducted power.
For XBee-PRO, PL= 4 is calibrated and the remaining power levels are approximate. The device
recalibrates its power setting every 15 seconds based on factory calibration settings, the current
temperature and the amount of voltage over the typical 3.3V. If the input voltage is too high, the
device resets.
For XBee, PL = 4, PM = 1 is tested at the time of manufacturing. Other power levels are approximate.
On channel 26, transmitter power will not exceed +3 dBm output.
Parameter range
These parameters equate to the following settings for the XBee RF module (boost mode disabled):

Digi XBee Specifications

General

Operating Frequency	2.4 GHz
RF Data Rate	250 kbps
Model	XBee S2C
Category	Control Unit
Operating Voltage	2.1 to 3.6V DC
Operating Temperature	-40 to +85 °C
Interface	UART
Dimensions	24.38 x 27.61 x 9.14 mm