October 16, 2021 at 2:06 am
#29073
Ken JamrogowiczParticipant
OK – I tried running the unit on batteries and that problem went away. I will need to filter my DC supply better! I am surprised that the internal voltage regulator in the unit does not remove this AC ripple.
Kind of a different question: why does this unit show ozone levels in the warning zone when it is in some really fresh air – near a forest and away from major highways, etc.?
Ken