I'd recommend emailing Rich to find out the accuacy, he is very helpful for figuring out specs.
To me it seems like RBI is trying to compete with Helix, which is very easy to beat with features (geez just have a down temperature button and you have Helix beat) when I feel they should be competing and trying to edge out the feature rich Herpstats. I actually emailed Rich with some suggestion for features for future models. I would LOVE to see a Vivarium with a different color LCD.