FWIW, I don’t mean that as a knock on Sonoff. I’m quite happy with their new presence sensor.
But I’m also glad that you got the new versions, because they appear to have significantly improved their technology and quality without raising prices dramatically.
In contrast, their contact sensors have been frustrating for me, and I’ve replaced them with IKEA’s new PARASOLLs.
Holy cow, that’s a lot of sensors!