Hova Bator questions

[Gex]

Just had a few questions for anyone who has any experience with these things.

First off, it seems to me it would be best to use a sealed container inside the incubator to place the deli cups containing egss into, is this assumption correct?

It looks to me like the circuit board sensor could easily be damaged by humidity, although in the directions it states you can pour water into the bottom, if anyone can clarify this it would be much appreciated.