Integration, Intelligence and TCP/IP deliver a Smarter Building Energy Management System

The Building Energy Management System that is reliable, cost-effective, IT-friendly and an easy-to-use interface.



TAC Vista is a Building Energy Management System that allows you to monitor and control HVAC, lighting control, access control and other security features across one or more facilities.  Based on the open protocol LonWorks, it is among the most scalable and IT-friendly systems in the industry. This scalable solution can accommodate any size building management application. Open architecture allows seamless integration with third-party products and provides complete interoperability.

  • TAC Xenta controllers:
    All TAC Xenta controllers provide an open and flexible system architecture and access to standardized LonWorks-based network technology.
  • TAC Menta :
    TAC Menta is a graphical programming tool for the freely programmable controllers—TAC Xenta 300 and 400. TAC Menta can be installed as stand-alone software in a PC, or as a part of the TAC Vista software package.


  • Fully LonWorks and TAC Vista™ compatibility
  • Reducing installation and operation costs
  • Provide greater flexibility in the use of building space
  • Helping building owners meet legal and building performance regulations


  • Access control
  • Video security
  • HVAC control
  • Lighting controls