Editing KNX (section)

{{Short description|Standard in building automation}}
{{Redirect|Konnex|the jazz record label|Konnex Records|other uses of KNX|KNX (disambiguation)}}
{{Infobox protocol
| name        = KNX
| image       = KNX logo.svg
| alt         = 
| caption     = 
| standard    = EN 50090, ISO/IEC 14543
| developer   = <!--organization(s) involved in development-->
| introdate   = <!--{{Start date|YYYY|MM|DD}}-->
| industry    = [[Building automation]]
| connector   = <!--connector(s) usable with protocol-->
| hardware    = <!--examples of compatible hardware-->
| range       = <!--{{convert|X|mi|abbr=on}}-->
| newer       = <!--superseded by which protocol-->
| website     = {{website|https://knx.org}}
}}
[[File:MDT AKD-0201.02.jpg|thumb|KNX universal light dimming actuator with two channels]]
[[File:Embedded World KNX TP Demo Board.jpg|thumb|KNX-Transceiver-Board by Elmos]]
'''KNX''' is an [[open standard]] (see [[EN 50090]], [[ISO/IEC JTC 1|ISO/IEC]] [[List of International Organization for Standardization standards|14543]]) for commercial and residential [[building automation]]. KNX devices can manage lighting, blinds and shutters, [[HVAC]], security systems, energy management, audio video, domestic appliances, displays, remote control, etc. KNX evolved from three earlier standards; the [[European Home Systems Protocol]] (EHS), [[BatiBUS]], and the [[European Installation Bus]] (EIB or [[Instabus]]).

It can use [[twisted pair]] (in a [[Tree network|tree]], line or [[Star network|star]] [[Topology (electrical circuits)|topology]]), [[Power-line communication|powerline]], [[Radio frequency|RF]], or [[Ethernet|IP]] links. On this network, the devices form [[Distributed computing|distributed applications]] and tight interaction is possible. This is implemented via interworking models with standardised datapoint types and [[Object-oriented programming|objects]], modelling [[Logical data model|logical]] device channels.