Table 7.

ZigBee technology parameters.

Parameters	ZigBee
Standard	IEEE 802.15.4
Frequency band	868/915 MHz and 2.4 GHz
Modulation type	BPSK/OQPSK
Spreading	DSSS
Number of RF channels	1, 10, and 16
Channel bandwidth	2 MHz
Power consumption in TX mode	Low (36.9 mW)
Data rate	20, 40, and 250 kbps
Latency	(20–30) ms
Communication range	100 m
Network size	65,000
Cost	Low
Security capability	128 bits AES
Network Topologies	P2P, tree, star, mesh
Application	WPANs, WSNs, and Agriculture
Limitations	line-of-sight (LOS) between the sensor node and the coordinator node must be available