If your application uses mobile equipment that is controlled via a TCP/IP network, or the cost of installing cable conduits on your site is prohibitive, then you should consider setting up a wireless local area network (WLAN).
The IEEE 802.11 standard is an established technique using RF technology to transmit ethernet data packets over the air. Applications that utilise TCP/IP will run on 802.11 compliant WLAN's in the same way as they do over conventional hard-wired networks. By common agreement between the regulatory authorities, a WLAN transmits over unlicensed spectrums with only minor variations from country to country.
IEEE 802.1X/RADIUS/TKIP security
64/128-bit WEP (Wired Equivalent Privacy)
Redundant dual 24 VDC power inputs or Power-over Ethernet (PoE)