Acu-Rite 00613 Digital Hygrometer from Wal-Mart

[Blak Smyth]

Originally Posted by macsauce13

I have one of these, and while it works just fine, I have to subtract seven from it every time.

I have tested 3 of them.
Two where 4 off and the third was dead on.

When I first tested one it said it was 7 off, but it didn't make sense when I had it in with another one. I pulled the batteries and tested it again and it has been 4 off since.