The stainless steel door entry system from Auerswald sets new accents to your door. Large buttons with integrated power-saving LED lighting lead visitors safely to the desired destination. Auerswald an existing installation can be converted very easily to the TFS-Dialog 300 and thus be on the cutting edge of technology with excellent Tonqualitätgebracht. The intercom system is simply screwed onto the existing wallbox. For new installations a suitable flush box is mitgeliefert.Das system is ideal for telephone systems without a separate door phone interface because it is connected directly to an available analog extension port of the system. By pressing a doorbell button, the intercom system behaves like an extension phone and dials a previously programmed phone number - another extension, group, or even an external call destination. Simultaneously with this door call a switching process might be released, which then - very classic - such as the doorbell or the stairwell light ansteuert.Die highlights of the TFS-Dialog 300: operating on the analog extension port of a telephone system by Auerswald and other manufacturers 1 - 4 Rings (TFS-Dialog 301 ... 302 ... 303 ... 304), also available such as light switches can be used as the programming telephone numbers and basic functions on two levels of sensitivity for noisy and quiet environments Verschleißreie switch contacts for Entrance, bell and light (bell transformer required) Power saving, wear-free LED lighting, continuously variable color (cool white to warm yellow) Additional switching options with optional A / B Switch Modules Exclusively from Auerswald: a / b switch modules Would you like to operation of a (bell) button while turning on lights or control your existing doorbell, then you need additional switching contacts. Auerswald exclusive solution for the TFS-Dialog 300 a / b switch modules that are easily connected to any point on the signal line between door entry system and telephone system and when a button provides the switching process auslösen.Sechs this a / b switch modules can be connected to a per TFS-Dialog 200 are used, and still only a single two-wire cable is required. Each key on the door station can control one or more switch modules selectable assignment. The modules fit easily into existing wall outlets, for example.