Xenon 4 in 1 Smoke/Fire/CO/NaturalGas Detector -- need device type handler help

Xenon is a medium size Chinese manufacturer with a really dumb name. (Impossible to google.) they manufacture mostly for the Chinese market. I’m still not sure they’re certified zwave products, either, I’ve never seen a conformance statement for them but maybe it’s filed under a different company name.

Speaking just for myself, I don’t buy any sensors for life and death emergencies that don’t meet UL standards. But that’s just me.