We tried some types of discounters product to Honeywell. This one is my favorite:
+ Stable! The screw is made of metal, with another product the Plastikverschraubung broke quickly, and then the whole thermostat is gone
+ Easy to use, usable display
+ The windows open function works (in another product, this was also indicated as a feature, but has never turned on)
+ Parental Control and the batteries are not accessible to children