'''C-Bus''' is a communications protocol based on a seven layer [[OSI model]] for home and building automation that can handle cable lengths up to 1000 metersmetres using [[Cat-5]] cable. It is used in Australia, New Zealand, [[Asia]], the [[Middle East]], Russia, United States, [[South Africa]], the UK and other parts of Europe including [[Greece]] and [[Romania]]. C-Bus was created by [[Clipsal|Clipsal Australia]]'s ''Clipsal Integrated Systems''<ref>https://www.clipsal.com/Trade/Products/Integrated-Systems</ref> division (now part of [[Schneider Electric]]) for use with its brand of home automation and building [[lighting control]] system. C-Bus has been briefly available in the United States but [[Schneider Electric]] has now discontinued sales in the United States.<ref>http://www.schneider-electric.us/sites/us/en/support/faq/faq_main.page?page=content&id=FA241002&viewlocale=en_US&country=US&lang=en&locale=en_US&redirect=true</ref>
C-Bus is used in the control of [[domotics]], or [[home automation]] systems, as well as commercial building lighting control systems.
