Its just fine right out of the box
If you shoot an area with your temp gun and it reads 95.0 and the Pro says its at 95.2, and youd rather trust your temp gun for what ever reason....
You can go in and calibrate the thermostat within seconds to make it say 95.0.
Its PERFECT right out of the box, dont get me wrong.
Theres just little things you can go in and change that make it a really neat thing to have.