TFS-Dialog 300

  • Türsprechsystem TFS-Dialog 300 | Auerswald
  • Türsprechsystem TFS-Dialog 300 | Auerswald
  • Türsprechsystem TFS-Dialog 300 | Auerswald

TFS-Dialog 300

Stainless steel door intercom system designed for
analogue interfaces which impresses not just by its design

This stainless steel door intercom system successfully introduces special design accents to your front door and ensures the highest level of operating convenience. Large push-buttons with integrated energy-saving LED lighting securely guide the visitor to the desired destination. An existing Auerswald installation can be easily upgraded to the TFS-Dialog 300, thus combining state-of-the-art technology with superior sound quality. Just screw the door intercom system into the flush-mount box. For a new installation, a matching flush-mount box is supplied.

The system is ideally suited for telephone systems without a separate door phone interface because it is directly connected to a free analogue extension. Once the door bell is triggered, the intercom system behaves just like an extension phone and dials a pre-defined number – this can be another extension, a group or even an external number. If you want, the door signal can also trigger a switching operation – e.g. activate the door bell or the staircase lighting.



  • Excellent speech audibility, frequency-optimised amplifier electronics
  • Operation on an analogue subscriber port of a PBX system made by Auerswald or other vendors
  • Stainless-steel door entry system for flush-mounting
  • 1–4 door bell buttons (TFS-Dialog 301, ...302, ...303, ...304), optionally useable as light key
  • Power saving, maintenance-free LED lighting, continuously adjustable colour (cool white up to warm yellow)
  • Telephone numbers and basic functions can be programmed via an extension telephone
  • Two levels of sensitivity for noisy and quiet environments
  • Integrated switching contact for door opener, doorbell or light (doorbell transformer required)
  • Additional switching possibilities with a/b switching modules
Interface, supply connection analogue subscriber port / extension of the PBX
Dial mode tone dialling
Technical data  
Housing material stainless steel (V2A; 1.4301), 2 mm
Power supply via analogue extension port (PBX) 16 – 60 V DC
Power supply via doorbell transformer (optional for outputs and LED lighting) 8 – 18 V AC, 35 – 40 mA 
Power consumption for LED lighting (doorbell transformer) 35 – 40 mA
Loop power, depending on operating < 1 mA / 20 – 60 mA
Temperature range -20 °C – +50 °C
Maximum load door opener relay 18 V AC / 40 V DC, 2 A
Maximum load doorbell and lighting output 18 V AC / 40 V DC, 0,5 A
Loudspeaker Ø 50 mm
Housing electronic unit plastic
Mounting plate material stainless steel (V2A; 1.4301), 2 mm
Dimensions (w x h) 136 mm x 227 mm
Distances between the fixing holes 193 mm
Installation depth 39 mm
Dimensions (w x h x d) 136 mm x 227 mm x 39 mm (electronics)
Dimensions flush-mounted box (w x h x d) 118 mm x 202 mm x 45 mm
Weight approx. 685 g
Protection IP 22 (when installed)
Safety CE

a/b Switching Module

Exclusive by Auerswald: the a/b switching module

If pressing the bell button is supposed to activate other functions as well, an a/b switching module – available for the TFS-Dialog 200, TFS-Dialog 300 and TFS-Universal plus – pays off immediately: it takes care that e.g. the light in the hallway goes on or the existing door bell rings. The modules are simply interconnected at any point of the signal line between door intercom and the a/b port of your telephone system.

When the bell button is pressed, a special control signal triggers the desired switching process. If e.g. you are talking to the visitor at your front door, you can release the door opener by pressing a key on your phone. And if you install several a/b switching modules, you can control various switching processes with different frequencies.


Communication and switching using the mobile phone

Assuming you are out of the house for an errand. If the door call is forwarded to your mobile phone you can inform the person in front of the door that you will be back in a second. Or you can tell the postman where to leave the parcel. If it is a family member who has forgotten the key you can open the door with your mobile phone, switch on the light or activate other switching tasks via the connected a/b Switching Modules.


Product Overview English online 

Product overview

Brief descriptions and key features
of the entire product range

8 pages - PDF


Download now


The documents listed below are available especially for TFS-Dialog 300:



Keine Produktabbildung

Brochure Türsprechsysteme

8 pages - PDF


ALSO Austria GmbH

Industriestraße 14
A - 2301 Groß Enzersdorf
Tel.:02249 - 7003-0
Fax.:02249 - 7003-0

blue2 - Telekommunikation- und Büroeinrichtungs GmbH

Heiligenstädter Lände 29 / 1. Stock
A - 1190 Wien
Tel.:01 - 8904295-0
Fax.:01 - 8904295-0

Ingram Micro GmbH

Guglgasse 7-9
A - 1030 Wien

Sabadello technologies GmbH

Hietzinger Kai 169/101
A - 1130 Wien
Tel.:01 - 20575-0
Fax.:01 - 20575-30

Adeltronik bvba

Smisstraat 3D
B - 1861 Wolvertem
Tel.:02 - 270 44 44
Fax.:02 - 270 08 80


Brunnmatt 14
CH - 6330 Cham
Tel.:041 - 784 33 00

LAGPER Desarrollos de Ofimática y Telefonía.

Avda. El Congost, 4 - 6 nave 12
E - 8760 Martorell - BARCELONA
Tel.:902 19 36 88
Fax.:937 73 56 76

LTcom Loukovitou B.-Taramonlis G.

Str. 21 Dodekanissou
GR - 54626 Thessaloniki
Tel.:2310 - 500 500
Fax.:2310 - 522 454

R.P.C. Rappresentanze s.a.s.

Via Lorenzo Leoni, 1
I - 06059 Todi (PG)
Tel.:075 - 8945604
Fax.:075 - 8945604

distri-company S.à.r.l

24, Rue du Moulin
L - 3857 Schifflange
Tel.:275 182 25

Telec Electronics B.V.

Wiltonstraat 31
NL - 2722 NG Zoetermeer
Tel.:079 - 3422611
Fax.:079 - 3425625


ul. 1 Maja 1b
PL - 77-100 Bytów
Tel.:059 - 8229610
Fax.:059 - 8229619


Calea Bogdanestilor, nr. 17
RO - Timisoara Sediul Central
Tel.:0356 803100

ParaCom AB

Bergkällavägen 32
S - 192 79 Sollentuna
Tel.:08 - 52509148


Mijavceva ulica 16
SLO - 1291 Škofljica
Tel.:01 - 236 48 80
Fax.:01 - 236 48 89

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