Z-Wave - the wireless radio protocol

Z-Wave is the wireless radio protocol used for controlling domestic electrical appliances. It is designed for unifying electrical equipment such as: lighting, thermostats, alarms, computers, telephones, air conditioning, electrical windows and blinds into one network.

Any electrical device equipped with the Z-Wave system module can be connected to the network. Currently, there are over 200 domestic electrical appliance's manufacturers associated in the Z-Wave system all over the world. There are already many products available on the market incorporating this technology.

Any electrical device manufactured by FAKRO will contain electronic module utilising Z-Wave chip. This will make it possible to operate windows equipped with servo-motors, ARZ-E external roller shutter, ARF-E, ARP-E internal roller blind, AJP-E Venetian blind and AMZ-E awning blind by means of a remote control with the Z-Wave technology and, in the future, via the Internet and computer equipped with that module.

 

The Z-Wave system is easy to install and its extension and management does not pose any problems regardless of the stage of building usage. Its installation does not require any cables joining separate electrical appliances which evidently lowers the costs and time of fitting ensuring user's comfort. It is designed for buildings being under construction and those already erected.

The Z-Wave system's operating principles consists in sending a signal through “fixed routes”. Radio waves sent from a controlling device (e.g. remote control) have a rout fixed for them so that the command can reach suitable device and be executed in a reliable manner. The command sending device (e.g. remote control) requires a confirmation of command acceptance. This confirmation is sent by the device to which the command was addressed. If radio waves encounter an obstacle in their way which makes it impossible for the signal to reach the device to which the command was addressed, the Z-Wave system searches for a “new route” to a given device. This new route passes through another device in the Z-Wave network which is the core characteristic ensuring system reliability. Thanks to it, Z-Wave protocol can have limited range – in this way reducing energy consumption – since for the command sending other devices are used.

 

The whole Z-Wave protocol is contained in one small chip produced by Zensys, one of the leading processor manufacturers in the world. The basic Z-Wave chip contains, amongst the others: processor, flash memory, radio transmitter and receiver. The Z-Wave system works on frequency 868,42 Mhz and is characterised by low energy consumption (standby = 2.5 uA). Its range in the rooms reaches 45 metres and outdoors it can be as much as 150 metres.