# Alarm port

The alarm port is marked with number 9 on the figure below.

<figure><img src="/files/1HOiBacL4BqHgISzq9Yl" alt=""><figcaption></figcaption></figure>

The external alarm port provides 3 isolated switch outputs with the maximum current rating of 1.0 A and maximum voltage of 24V AC or DC.&#x20;

The switch is closed when there is no alarm and opens when alarm condition is detected.

The switch outputs are connected to pins of the XLR socket as shown below.

<figure><img src="/files/3gXaglu3deltOuW6yed7" alt=""><figcaption></figcaption></figure>

The alarm states can be monitored using FK002 sensors connected to the XLR female plug.

It is possible to observe all the alarms with one FK002 by connecting the outputs in series.

## B3 settings

In B3, FK002 sensor is used to observe the alarm status. Solder the FK002 cables to pins 1 and 2 of the XLR plug.

The alarm shall be raised when an opened state is detected.


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