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TFS-Dialog 104

AUERSWALD TFS-Dialog 104 (90620)

Artikelnr: 90620
TYPE: Accessories

TFS-Universal a/b

You already have an integrated panel in your front door or a high-class letter box system with bell buttons and preparation for an intercom system? What about modern door phone technology which you can connect easily to your telephone system? The Auerswald TFS-Universal a/b is the perfect solution.

The housing fits into (nearly) every environment. With ten universal eyelets you will always find a possibility for a safe mounting. Or fasten the housing simply with the huge glue on pad behind the front plate of your door bell system. The microphone has an own little housing which can be mounted separately – just as you like it and optimised for the existing mounting conditions.

Four door buttons and one door opener relay can be connected directly. Via a two-wire cable it will be connected directly to an analog port of your telephone system and acts similar to a telephone: by pushing one of the bell buttons a predefined internal or external number will be called automatically.

Exclusive by Auerswald: the a/b Switching Modules
Do you want to switch on lights simultaneously when pushing a (bell) button? Or do you want to activate your existing door bell? Then you will need additional switching contacts. Auerswald offers as an exclusive solution the a/b Switching Modules which can be connected at any place to the two-wire cable between door phone system and PBX and will activate a switching procedure when pressing a key.
Up to six a/b switch modules per TFS-Universal a/b can be used with only one 2-wire cable. Each button can be assigned to and control one or several switch modules. Without problems, the modules fit in any of the existing flush-mounting junction boxes.

  • Operation on an analog subscriber port of a PBX system made by Auerswald or other vendors
  • Universal door phone system for the integration into existing door phone and letter box systems
  • Eyelets all around for simple mounting with screws
  • Large-area glue on pad – tear off the protection film and stick it on
  • Programming of the numbers and basic functions via telephone
  • Two levels of sensitivity for noisy and quiet environments
  • 1–4 door bell buttons, optionally useable as light key
  • Switching contact for door opener, doorbell or light (doorbell transformer required)
  • Additional switching possibilities with a/b Switching Modules


analog subscriber port /extension of the PBX

tone dialling

16–60 V DC

8–18 V AC, 40 mA

< 1 mA / 20–60 mA, depending on operation mode

18 V AC / 40 V DC, 2 A

18 V AC / 40 V DC, 0,5 A

Ø 50 mm, weatherproof speaker diaphragm

plastic, black

108 mm x 80 mm x 29 mm
approx. 80 g
IP 20

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