BACnet (Building Automation and Control Networks) is an open communication protocol specifically developed for building automation. It is applied worldwide for connecting and controlling installations such as:

  • HVAC systems
  • Lighting
  • Access control
  • Energy and water meters
  • Shading and other building elements

BACnet is defined in the international standard ISO 16484-5 and offers a standardized way for devices and systems from different manufacturers to “communicate” with each other. Instead of each brand using its own closed protocol, BACnet creates a common language.

Key features of BACnet:

  • Open standard – no licenses or vendor lock-in
  • Interoperability – systems from different brands can work together
  • Object-oriented – data is organized into objects (e.g., “Analog Input” for a temperature sensor)
  • Network-independent – can run over IP (BACnet/IP), MSTP (serial), or even wirelessly
  • Flexible and scalable – suitable for small buildings and large campuses