What is KNX?
KNX is a global open standard for building automation used to control systems such as lighting, heating, ventilation, air conditioning (HVAC), blinds, and security.
It is widely used in Smart Buildings and high-end commercial and residential projects where decentralised, reliable control is required.
What KNX does
KNX enables devices within a building to communicate directly with one another to automate functions such as:
- Lighting control and scene management
- HVAC and room temperature control
- Blind and shading automation
- Presence and occupancy detection
- Security and access control integration
How KNX works
KNX uses a decentralised architecture where devices communicate directly over a shared bus or IP network, rather than relying on a single central controller.
Each device is programmed using ETS (Engineering Tool Software) and can operate independently, increasing resilience and reliability.
KNX communication types
- KNX TP – twisted pair cabling (most common)
- KNX IP – Ethernet-based communication
- KNX RF – wireless KNX devices
- KNX Powerline – communication over mains wiring
KNX vs BMS
KNX and Building Management Systems (BMS) are often used together but serve different purposes:
- KNX – decentralised room-level control (lighting, HVAC, blinds)
- BMS – centralised monitoring, analytics, and plant control
In many Smart Buildings, KNX handles local control while the BMS provides supervision, optimisation, and reporting.
Where KNX is used
- Commercial offices and workplaces
- High-end residential developments
- Hotels and hospitality
- Education and public buildings
- Mixed-use Smart Buildings
Platforms that integrate with KNX
Roles that work with KNX
- KNX Engineers
- BMS Engineers
- Controls Engineers
- Lighting Control Engineers
- BMS Project Managers
Why KNX matters
KNX is valued for its reliability, vendor neutrality, and long-term stability. It enables scalable, future-proof building control without locking projects into a single manufacturer.
As Smart Buildings become more complex, KNX remains a trusted foundation for room-level automation and user experience.