The TFS Universal Plus is simply mounted in the housing of the existing intercom or mailbox system. For signaling use the existing doorbell on. This system requires only an analog extension port on the telephone system for communication.

- Finished plastic housing for mounting screws or glue, microphone mounted separately
- Operating on an analog extension port (a / b port) by Auerswald PBX or other manufacturer
- Sensitivity for noisy or quiet interiors adjusted (eg workshop operation)
- Volume of the external speaker set
- Programming of functions and numbers dialed by phone
- Wear-free switching contacts for door release, light or bell (bell transformer required)
- Additional switching options with optional a / b switch modules on the signal line
- Communication and Power also possible externally, eg via mobile phone
- Letter signaling new post in your mailbox (mailbox contact required)
- Automatic door opener, such as automatic door opening during practice times
- Stop ringing after opening the door (door contact required)
- Opening the door bell button above, quick open without Intercom
- Listening room / area monitoring (eg, as a room monitor), with selection of a destination number
- Operation as internal unit, answering and talking about the end call button type: 90667 Quantity: 1 ea.