intercoms- electronic Italy

... well as an LED to provide indications regarding the system's operation (proper connection is required). Depending on the versions, there are also two additional "service" buttons or a "privacy" button (the activation status of which is indicated by an LED) and one "service" button. User adjustments include brightness and the volume of the electronic chime, but there are also trimmers through which the installer can adjust contrast, saturation, and, depending on the model, the microphone volume.