When Starkvind turn’s off or turn’s on or when there is no actual reading available it reports “65535” value instead of not reporting any values.
Workaround I am using atm is Home Assistants template (excerpt):
{% set current = states('sensor.air_purifier_pm25') | float(none) %}
{% if current < 65535 %}
{{ current }}
{% else %}
But obviously this should not be needed and no value should be reported and because of this it is a bug.
Also - please move this where appropriate. There is literally no info about where to post bug reports: [Announcement] Closing User questions and feature requests on Github. Moving to forums! · Issue #5113 · dresden-elektronik/deconz-rest-plugin · GitHub Nothing about bugs mentioned. Totall community mess.