An OK unit, not that flash or professional, some icons on the screen are hard to see and understand, it should be more basic and setting up without a computer.
Needs 2 have a simple icon layout: inside and outside temps are big and next to each other, with high low Alarm settings next to it, with the Alarm on / off button. Simple. All settings need to be down the screen as such and turn into a touch screen with a light button that stays on!
Have regular firmware upgrades every few months.