Product review (2 stars): Short service life.
This was pretty nice when we first got it, accuracy was good, but after the second year (out of warranty of course) it began to eat batteries.  When new the first set of batteries lasted a year, second set lasted about 6 months. After two years I am now lucky to get two months from a set of batteries.  Not sure what is happening, using fresh name brand batteries. Pretty disappointed.  Seems to be a common problem with the remote outdoor sensor with this device, check the internet and you will see many similar complaints.