I am not selling, but I am not sure I can agree with everything presented.
"New homes in the U.S. must be a tiny % of revenue"...
This is not true. Still the majority of sales of Smoke and CO2 detectors come from new housing in the US. New housing starts (not sales) determine the health of this channel, and they are down between 20% and 25%. UUU opened a new retail channel through HD which should help to stem the sales slide in the new home market, but this is not nearly as big a channel as new home starts.
Commercial construction appears to be holding up OK for now, and the CAD (I think) is feeding mostly into that market. Additionally, the smoke and CO2 feed that market.
Regarding HKJV, I will defer to others that are more knowledgable.