Background: We discover an artifact in the present day somewhere remote. This artifact is in the form of a small (approximately phone sized) sphere, and when researched, it is discovered to have the ability to manipulate temperature and pressure in a cylindrical band roughly 2 to 15 meters away from the user. It is able to control between roughly Venus and Mars surface weather conditions.
Is the artifact capability plausible according to known physics and if so how?
At each of the extremes, what would the surrounding environment look like?
At what levels would major environmental changes occur(weather, habitability limits)?
Any and all answers will be appreciated. Thank you!