The coverage of wireless Grenton Modules amounts to approximately 30 metres. It is dependent mostly on the materials which were used to create the construction and the walls of the building. Zwave standard works in MESH network, thanks to which each wireless Grenton module is somehow the amplifier of that signal. In practice, the devices connect to one another and subsequently to the device with the strongest power. Thanks to this, Z-wave wireless devices can be successfully applied in large investments.