Same here, Sarah. Completely useless in Manitoba cottage country. My
experience is identical to yours - sometimes it comes back at -15c,
sometimes not. Usually at -10c its stable. I'll probably try to sell
these to someone in a warmer climate and buy...
Same issue here in Winnipeg, MB. Temperatures have been sitting around
-15c to -20c overnight the past week and two of my Google Nest battery
cameras are offline. one with the warning of "extreme temperature."
total garbage - I wish I hadn't invested...