Radio Shack digital hygromter

[avid toker]

Hey folks,

I bought a Radio Shack digital hygrometer (Cat. #: 63-1036) a while back and am noticing that no the humidity reading displays HH%. I've taken it out of the humidor and reset it and then it goes back to normal. Shortly after putting it back in the humidor, it shoots back up to HH%.

Now I know the humidity in my humis are fine since I've tested them with other digital hygrometers and the RH is steady at 67%.

Do I have a bum RS hygrometer? Should I buy a new one for $10 with the coupon in the other thread?

Thanks for looking.