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Heartbeat function

Is it possible to make a script that controls the existence of a product? For example, a CO2 sensor that sends a ppm value and if it stops to send, the script would write a "1" to a KNX group address?
You can do it like this
Or if your device sends values periodically then you can monitor updatetime and if update time wasn't send for last X sec send 1 to your object.

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