The Vario bus switch is designed for large projects and connects two intercom systems with one another. Mixed operation of the In-Home bus, Access and Multi systems is possible.
Communication takes place via the three interfaces of the switch. Only data for call and display functions with feedback is processed. The door call takes place via interface A. The Vario bus switch forwards the call to the intercom systems via interfaces B and C. No data is exchanged between interfaces B and C. The power supply must be provided on interface B.