Honeywell

This little item was driving me and the fellows I play pool with nuts.  We couldn't get past it's locked screen to adjust the temperature in the game room so we made do as well as we could with open windows and paddle fans.
Then one of us got motivated enough to look-up on line how to unlock the darn thing....and unlock it we did.
Now it is programmed to cool the room when we are playing and then revert back to it's original setting.
And it's locked that way!