C-Bus (protocol)

C-Bus is a communications protocol based on a seven-layer <a href="/facts/OSI_model/oxN9Xhjz">OSI model</a> for home and building automation that can handle cable lengths up to 1000 metres using <a href="/facts/Cat-5/hw2XHSh3">Cat-5</a> cable. It is used in Australia, New Zealand, <a href="/facts/Asia/4IToYrrQ">Asia</a>, the <a href="/facts/Middle_East/8CD6pLWv">Middle East</a>, Russia, United States, <a href="/facts/South_Africa/vvXQpLgq">South Africa</a>, the UK and, other parts of Europe including <a href="/facts/Greece/lqHw8bTB">Greece</a> and <a href="/facts/Romania/yolzk5cN">Romania</a>. C-Bus was created by <a href="/facts/Clipsal/mMTgTG3G">Clipsal Australia</a>'s Clipsal Integrated Systems division (now part of <a href="/facts/Schneider_Electric/8DEQxsAw">Schneider Electric</a>) for use with its brand of home automation and building <a href="/facts/Lighting_control/WshRMMSk">lighting control</a> system. C-Bus has been briefly available in the United States but <a href="/facts/Schneider_Electric/8DEQxsAw">Schneider Electric</a> has now discontinued sales in the United States.
C-Bus is used in the control of <a href="/facts/Domotics/kfz6C07m">domotics</a>, or <a href="/facts/Home_automation/kfz6C07m">home automation</a> systems, as well as commercial building lighting control systems.
Unlike the more common <a href="/facts/X10_(industry_standard)/LFrqygzr">X10</a> protocol which uses a signal imposed upon the <a href="/facts/Power_line_communication/y0QpHy0V">AC power line</a>, C-Bus uses a dedicated low-voltage cable or two-way wireless network to carry command and control signals. This improves the reliability of command transmission and makes C-Bus far more suitable for large, commercial applications than X10.

C-Bus (protocol) open-in-new

C-Bus (protocol)