Hello lurkers,
I've been eyeing SNZB-02P for a while now, but they're not yet available via my usual distribution channels, so no such luck for me. You might be lucky where you are, though.
The old SNZB-02s are configured to report temperature once in 10 seconds (much faster than the default), and the battery is still at 100% with voltage being at 3000mV since last November, for all 8 of them. More than enough for HCC control quality, which worked just fine for decades with 30 seconds time resolution of XBee sensors.
--vt