If you want to switch on lights when a (doorbell) key is pressed, control your existing door bell, or inform your intrusion detection system about visitors at the door, then you need additional switch contacts.
As an exclusive connection option, you may use a/b Switching Modules which can easily be switched to any location on the signal line between the door terminal system and ICT system, and initiate the switching operation when a key is pressed.
Note: The product is available from distributors, regional wholesalers or local specialist dealers.
Technical highlights:
Six a/b Switching Modules suitable for use with TFS-Dialog 200/300/400 or TFS-Universal plus, requiring only a two-core cable
Each button can control one or more switching modules, assignment programmable