Expire_after option for MQTT Alarm Control Panel

Regular MQTT Sensors have an expire_after option. This option was later added to and MQTT Binary Sensor but not to other MQTT integrations like MQTT Alarm Control Panel and MQTT HVAC.

It would be handy for integrations that send status periodically to notice that the integration is dead. For example, an alarm system that is not sending status for a while is a reason for concern. With the expire_after option this could be easily noticed.

Does your alarm have LWT messaging?

I believe this Alarm does not have LWT messaging.
I’ve just opened a feature request for this alarm to support LWT.

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Per my request, LWT support was added to the Alarm, so I, personally, no longer need the expire_after feature. Thank you @tom_l

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That’s a great outcome.