The first set of batteries I used in mine lasted just short of 30 days. I was surprised to see that it was calling home every minute though. It seems to me that if it checked less frequently it would last longer.
Any update on this?
I had the same thing happen to me...
I set a rule for a notification once the temp dropped below 40 and got 150 emails before I was able to bring the Twine inside so it would stop sending them.....