I love my ET-73.
I use it in the meat fridge too, when I cure bacon & such. I put the meat probe in a bottle of water (half-way in) to track the meat temp, because the other one just hanging in there (measuring the air) fluctuates from 29˚ to 41˚. Those temps make the water in the bottle range from 36˚ to 38˚, which would also be the temp of the meat----Perfect!
I'll bet I have 6 weeks of continuous (24 hour) use on those batteries, and they just keep on keepin' on.
And yes their service in NJ is GREAT. The first one I got, after I tested it, the little tiny on/off switch broke off. I called them & they didn't even ask me to send it back----Just sent me another new one in a couple days.
Bearcarver