WHAT is Z-WAVE ?
Z-Wave is the leading international technology standard for wireless communication in so called Smart Homes. Smart Home means intelligent connection and automation of various functions within buildings as well as adjacent outdoor facilities. In doing so different electrical installations such as light switches, electronic door locks, heating thermostats, blind controls and other appliances are controlled by sensors, wall switches, remote controls, smartphones, tablet and desktop pc. Customers can choose from an ever-growing number of different products (currently more than 2,100 products from around 600 manufacturers worldwide). They all support the Z-Wave standard and guarantee full interoperability within a common home network. Advantages: All devices are certified to full interoperability with each other. As a result devices from different vendors and different applications work together in one wireless network. Only the best Buy switches, lights, thermostats and security systems from respective experts and combine them in your own Z-Wave network.
Z-Wave uses the frequency of 868.42 MHz that belongs to the SRD (Short Range Device) frequency band that was licensed for smart home applications in Europe, Africa and the better part of Asia. Z-Wave uses a standard line encoding and for high security applications such as electronic door locks or roof windows, a single TAN system is applied that meets highest security standards. Every communication is reconfirmed by the receiver so that the transmitter can retransmit in case of connection problems or give a proper alert to the user. Every mains powered device acts as a router for all other devices. In case a message can not be sent directly to the receiver due to an obstacle the network will automatically re-route this message via other nodes. This ensures a very high reliability of a Z-Wave based wireless network. Every Z-Wave network consists of up to 232 notes which can own additional notes (slave devices). Typical wireless ranges for communication between different devices are 30 m inside and up to 100 m outside buildings. The 868 MHz radio wave can penetrate walls very well. More information about the Z-Wave technology can be found online: "Z-Wave Basics: Remote Control in Smart Homes" Wikipedia article about Z-Wave Z-Wave technology and support forum