TFS-Universal plus

  • Türsprechsystem TFS-Universal plus | Auerswald
  • Türsprechsystem TFS-Universal plus | Auerswald
  • Türsprechsystem TFS-Universal plus | Auerswald

TFS-Universal plus

This multi-functional system easily replaces a reception clerk!

You can’t always replace an old door intercom system without major modifications. Mounting boxes, firmly embedded in the wall, bell buttons that match the door design or entire letter box systems set the limits. If you still want to use latest technology with your existing door intercom, the TFS-Universal plus opens up a loophole: It fits both in your existing letter box and in the recess of your existing door intercom or letter box system, thus enabling you to conveniently talk to the visitor over the phone, automatically switch on the staircase lighting when the bell rings or even be informed when there’s new mail in your letter box! Ten universal screw latches give you ample possibilities for a secure mount.

Likewise, you can simply glue the housing behind the front plate of your bell system – a whole-surface adhesive pad is supplied. Since the microphone is located in a separate part of the housing, it can be mounted separately – just as you prefer and the fitting conditions require it. Best of all: you can keep the existing bell buttons in operation.

Four bell buttons and a door release relay may be connected directly. Connected (via a two-wire cable) directly to an a/b port of your telephone system, it will behave just like a regular phone: once the bell button is pushed, it automatically dials a pre-defined internal or external number.



  • Automatic door opening, e.g. during the surgery time
  • Stop ringing after door opening (door contact required)
  • Door opening directly with door bell button
  • Room monitoring, with dialling a call number
  • Operation as intercom device, control via door bell button
  • Programming of the numbers and basic functions via telephone or PC software TFS-Set
Interface, supply connection analogue subscriber port / extension of the PBX
Dial mode tone dialling
Technical data  
Power supply via analogue extension port (PBX) 16 – 60 V DC
Power supply via doorbell transformer (optional) 8 – 18 V AC
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 lighning output 18 V AC / 40 V DC, 0.5 A
Loudspeaker Ø 50 mm
Housing plastic, black
Dimensions (w x h x d) 109 mm x 84 mm x 29 mm
Weight 80 g
Protection IP 20
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-Universal plus:



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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