The core of the Home Automation solution is based on the KNX standard which is generally used in larger commercial or hospitality projects but which meets my requirements very well – at least for the control devices which are hard-wired into the electrical systems.
The main exception is the DALI standard used for controlling the dimmable lighting, since DALI dimmers are more widely available (and cheaper) than native KNX dimmers and the lighting dimmers represent the majority of the control devices installed (more than 50). However, all the DALI-controlled devices are presented to the KNX bus via a DALI-KNX gateway so everything can be controlled via KNX and direct interaction with the DALI bus is therefore confined to the initial configuration of each dimmer.
KNX systems have a reputation for being expensive but since the KNX standard is not owned by any one manufacturer there is a degree of competition in the KNX marketplace which makes it possible to choose more cost-effective devices in many cases. Mostly I am using devices from German manufacturer MDT which I have found to be of high quality and with good functionality.
KNX by Marsh Flatts Farm Self Build Diary is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.