AT 21

Possible to adjust receiver volume. Choose from three ringtones. For example, one ringtone may be a call from the entrance, another might be the doorbell and the third some other suitable external equipment. AT 21 is fitted with a hearing loop.

Features and advantages

  •  Hard-wired doorbell intercom for indoor use.
  •  Adjustable earpiece volume.
  •  Adjustable ringtone, volume and tune.
  •  Can also be used as doorbell – different ringtone.
  •  Supports hearing loop.
  •  Output for activating external equipment when ringing.
  •  Up to 999 doorbell intercoms in each system.
  •  Simple opening function.
  •  For connection to loop or star networks.

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