ZigBee low-power, short-distance wireless standard that uses the 2.4GHz band is part of the ISM [Industrial, Scientific, and Medical] license-free radio bands.
Additional frequencies of the ISM band include the 900MHz band, and the 5.8GHz band.
The european version operates in the 860MHz band. ZigBee is a wireless standard based on 802.15.4.
The ZigBee specification [1.0] was released in 2005.
ZigBee modulation may be BPSK/BPSK/O-QPSK, or DSSS and operates out to about 100 feet in free space.
A similar, competing wireless standard in the same bands is; Z-Wave.
The ZigBee Specification may be down loaded free of charge from the Zigbee Alliance
Atmel {ZigBee compliant low-power, high-sensitivity 2.4 GHz transceiver, 8-bit RISC microcontrollers}
freescale {ZigBee compliant transceivers}
Digi {XBee Modules, ZigBee Radio Modems}
Microchip {XBee Modules}
Telegesis {ZigBee technology Modules}
Texas Instruments {System-on-Chip for 2.4 GHz ZigBee}
Companies which manufacture Wireless ICs are listed on the RF component manufacturers page.
For reference the IEEE 802.xx Family of standards is listed below:
IEEE 802.1 Higher layer LAN protocols
IEEE 802.2 Logical link control
IEEE 802.3 Ethernet, listed on its own page.
IEEE 802.4 Token bus
IEEE 802.5 Token Ring, used FDDI.
IEEE 802.6 metropolitan area networks
IEEE 802.7 broadband
IEEE 802.8 fiber optic
IEEE 802.9 isochronous LAN
IEEE 802.10 Security
IEEE 802.11 Wireless LAN [ISO/IEC 8802-11]
IEEE 802.12 demand priority
IEEE 802.13 (not used)
IEEE 802.14 Cable modems (In-active)
IEEE 802.15 Wireless PAN [Personal Area Networks]
IEEE 802.16 Broadband wireless access
IEEE 802.17 Resilient packet ring
IEEE 802.20 Mobile Broadband Wireless Access
[Industrial, Scientific, and Medical], license-free radio bands
6780 kHz ±15.0 kHz
13560 kHz ±17.0 kHz
27120 kHz ±163.0 kHz
40.68 MHz ±20.0 kHz
915 MHz ±13.0 MHz
2450 MHz ±50.0 MHz
5800 MHz ±75.0 MHz
24.125 GHz ±125.0 MHz
61.25 GHz ±250.0 MHz
122.5 GHz ±500.0 MHz
245 GHz ±1.0 GHz
Chart of US Frequency Allocations *.pdf {NTIA}
BWA: Broadband wireless access
CBA: Commercial Building Automation
HA: Home Automation
HVAC: Heating Ventilation and Air Condition
IPM: Industrial Plant Monitoring
LOS: Line-of-Sight
NLOS: Non-Line-of-Sight
WEP: Wired equivalent Privacy
WPA: Wi-Fi Protected Access
Note these device have a very limited range. So the odds of interfering with another unit are remote.
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