In answer to both your questions and any others that may be forthcoming:
I have one and it often sits on a shelf next to my wireless PC with no problems either way.
It does not have any effect either on, or from the cordless phones and my cell phones work perfectly well with it in close proximity.
Even the little wireless weather station works fine.
So it won't bother anything, and nothing will bother it.
There are no RF warning messages come with the instructions.
dave