Digital alarm converter

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A digital alarm converter ( DAU ) is a stationary transmitting and receiving radio system in radio networks for alerting digital radio signal receivers .

They receive their data via a wire or radio link either from a digital alarm transmitter (DAG) or from another DAU. The received data are processed, if necessary, additional information is inserted and broadcast via the transmitter unit on the same frequency .

In addition to radio signal receivers, receivers of these broadcasts are, for example, digital siren control receivers (DSE) or other DAU.

These converters are used to ensure or improve the radio coverage of a certain area.

Alarm converters for alerting non-digital (analog) receivers are simply called alarm converters .