I just moved the four motions sensors from ST to HE yesterday. The two 2016 versions had been paired with ST for over a year, and the 2018 versions for at least 6 months. The oldest one shows battery at 37%. None of the others is below 50%.
Iris motions setters may be a bit hard to get a hold of.
I started out with these, IMHO they're OK at best. The mounting system is cool at first, but I found that the little "rubber bumper" that stops them from slipping out of position will come off of the sensor after a while and you'll probably have to "get creative" with something to replace it (I used adhesive backed velcro dots). Also, I found that they tend to send multiple active/inactive reports which may or may not be an issue with functionality (it just bothered me seeing it in the logging). In the end, I have several in my "eh maybe I'll use them someday box" and about 4 that I have disabled all but the lux functionality.
He will take less. I got 10 for $55
At least CR-2 batteries are easily found in virtually any store!
The "finding" part isn't as much of a concern with the internet, as the issue with keeping stock of them along with the other 4 different size batteries I already have to maintain stock of....
As long as your in the contiguous united states, most vendors won't ship lithium coin cells to AK or HI which is my problem and why I had to retire my ST 2016 versions (can't get replacement cells).
You could try ordering from https://www.fasttech.com/ (direct from China) they will usually ship anything, I've got many lithium batteries from them however being direct from China don't expect them in a hurry usually takes 2-4 weeks....
Do you find that the lux functionality is pretty solid?
Yes it measures lux from 0 to 15k if I remember correctly, the report threshold and frequency are adjustable.
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