True, though I have to believe that the line the sensors themselves are coming off of has QC to ensure they the batches seem to be operating within spec. And I

True, though I have to believe that the line the sensors themselves are coming off of has QC to ensure they the batches seem to be operating within spec. And I knew I wasn't getting the full factory testing, but for a home installation I am not worried about that. If the values happen to be a bit off, it's no big deal.