Intelligent Smoke Alarm System with Wireless Sensor Network Using ZigBee

Table 1

Comparison of WLAN technologies.

	Wi-Fi; (802.11) [20]	Bluetooth; (BLE) [21]	ZigBee [22]	Z-Wave [23]
Transfer rate	11 and 54 Mbits/s	1, 3, and 24 Mbits/s	20, 40, and 250 Kbits/s	9.6 Kbits/s
Power consumption	10–50 mA	0.6 mA	1.2 μ.
Effective distance	100 meters	10 meters	100 meters	100 meters
Frequency	2.4 GHz	2.4 GHz	868,900~928 MHz and 2.4 GHz	868~908.42 MHz
Networking topology	Point to hub	Ad hoc, small networks	Ad hoc, peer-to-peer, star, tree, mesh	Ad hoc, peer-to-peer, star, tree
Security	WEP, WPA; (low)	64- and 128-bit encryption; (medium)	128 AES plus application layer security; (high)	128 AES; (high)
Typical applications	Wireless LAN connectivity, Internet access	Wireless PAN connected with devices	Industrial control and monitoring, sensor networks, home control and automation	Sensor networks, building automation