ZWave home automation technology is based on an RF wireless mesh
network. ZWave lighting control products provide solid reliable
performance and since each device can act as a wireless repeater, the
more ZWave products you have installed, the stronger your network
becomes. This mesh network design also means that a Z-Wave transmitter
doesn't need to be in range of a Z-Wave receiver to control it, as long
as there are other Z-Wave products in the network in between them that
are in range. ZWave has excellent penetration through walls and floors,
and is very secure with over 4 billion unique network codes to identify
nodes. ZWave products from various manufacturers are interoperable.
For more information on Z-Wave technology you may wish to visit:
Z-Wave Allance
Z-Wave.com
Zensys