I find curtain sensors very useful in my 433mhz alarm projects since they limit false alarms thanks to the narrow motion sensing AOI.
I use 433mhz sensors similar to this:
I can't seem to find z-wave equivalents .... if there are no z-wave equiv, zigbee will do i guess.
Looks like a narrow range motion detector, thinking any cheap PIR motion detector and a little electrical tape…
I’ve used these. They work well and are quite responsive.
if you're doing RF, i highly recommend a bond bridge. it can integrate with HE
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