Expands the built-in audio module by an additional 12 binary inputs. For integration into letterboxes and doorbell systems from various manufacturers, for example in products from Erwin Renz Metallwarenfabrik GmbH & Co KG, Boschstr. 3, 71737 Kirchberg/Murr. With interface for connecting additional built-in button extensions. The built-in audio module can be expanded to a maximum of 99 inputs for doorbell buttons using the built-in button extension. Consumption units: 1 Suitable for use with the camera interface (83327), the 180° camera module (83503) and the status module (83190). Further information on commissioning and operation can be found in the system manual and the online operating instructions in the current online catalog.
