I had one accurite that I accidentally got a little wet while misting my tank and it stopped working (it was only good then as a clock ). Kept thinking that mybe if it dried out it would work and actually held onto it for about a week, even though this one did not get seriously wet. But no such luck . It was no big deal, I actually went and replaced it the same day, but learned that when I am misting the tanks to take the accurites out!! I really like mine, I have one for each enclosure.