The highlights of the TFS Dialog 200:

Operation on the analogue extension connection of a telephone system from Auerswald or other manufacturers Programming of telephone numbers and basic functions via telephones Two sensitivity levels for loud and quiet environments Integrated switching contacts for door opener, bell and light (bell transformer required)
Additional switching options through a/b switching modules
Modern slim-line housing in elegant design and compact construction with only 16 mm height
1–4 bell buttons (TFS-Dialog 201, ...202, ...203, ...204), can also be used as a light button
Shatter-proof nameplate glass with full-surface white background lighting using maintenance-free LED technology
Print template for labeling the name tags
Weather protection roof optionally available