Add-on module for built-in speaker

Order no.
Packing unit
Order no. 1259 00
1259 00
EAN 4010337259008
Packing unit 1
PS 18
Recommended retail price. Price system (PS) not equal to 1, 14 = reduced discount.

Necessary accessories



  • Installation in a conventional flush-mounted device box.
  • Fits in the cover frames of the Gira TX_44 switch range.
  • Modular design, allowing easy installation and expandability.
  • Signal transmission and supply of the audio and video components via reverse-polarity-protected and short-circuit-proof 2-wire bus.
  • Up to twelve mechanical bell buttons can be connected.
  • Additional bell buttons can be connected via additional add-on modules.
  • Up to eleven add-on modules can be connected to one built-in speaker.
  • Alternating current polling of the bell button connections to prevent oxidation on the button contacts.
  • Compact size.
  • Securing of connection terminals against incorrect connection.
  • Attachment of the add-on module with screws or gluing.

Technical data

Power supply:
via connection cable

Connecting the connection cable:
2 x connector strip

Protection class:

Mech. Bell button:
12 x screw terminal
Common earth of bell buttons:
1 x screw terminal
Connection cable:
2 x connector strip

Protection class:

Ambient temperature:
-25 °C to +70 °C


  • Module for extension of the built-in speaker when more than eight mechanical bell buttons are to be connected.
  • This component enables door communication systems with up to 140 audio devices to be set up (e.g. 1 x built-in speaker, 11 x add-on modules for built-in speakers, 136 x surface-mounted home stations).
  • Protection type IP44 only in combination with a suitable front or when installed.

Scope of supply

  • The mounting materials are included in the scope of supply.

Dimensions in mm

incl. fixing lug: B 67 H 66,4 T 27
without fixing lug: B 67 H 56 T 27

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Data sheet



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Revit file for BIM (Building information modeling)

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RFA, 456 Kb


IFC file for BIM (Building information modeling)

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Operating instructions

Operating instructions

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