I ordered two, for myself and a friend. I picked them up and when I tried the first one at home, I only got occasional readings, mostly it just sat at zero.
I finally got back to Lowe's and found a helpful guy in the tools department.
He tried the first meter - the one I had been trying to use. It would occasionally flash a reading, but the reading would disappear before you could be confident you had read it. He tried the scraps of oak, cherry, and maple that I took in to test, then he went to the lumber racks and tried numerous pieces with the same (non) results. He concluded that I should return it.
I said, do you want to try the other one, to see if it works. The second unit was worse than the first - it didn't even flash a reading.
I said, do you want to go through your inventory to see if you have a good one (or two). He went and talked to the manager. When he came back, they were suddenly out of stock (I suspect the stock was pulled),
When I went back to the returns desk, she said "why are you returning it?" I said "doesn't work." She said "my boss will have my head." I said "how about 'suckey'." She asked do you remember who you talked to? She paged him and he gave her words about beeping nicely, display was pretty, but no moisture readings. She felt confident she would keep her head, and I got my credit.
They said that a different model would be available starting in September, but it would be more expensive.