We also have motion/vibration sensors, moisture/temperature sensors, light sensors, etc.

Attention Landlords and Property Managers In my neck of the woods, we are having record setting extreme cold temperature that seem to keep lingering on and on.

On most days during winter, the room temperature is only about 10 degree higher than outside temp if there is no heat turned on.

Furnaces would only go on the blink when temperatures were below zerow.

The tenant can push buttons all day and it will do nothing if you choose to disable the keypad....Great post, but one point to clarify.All thermostats are sensing ambient temperature in some way, so all are vulnerable to tenant tactics that manipulate the ambient temperature in the vicinity of the thermostat; some of those tactics appear in my previous post on this thread.So the word "only" in the quoted post assumes that there is no such tampering going on.

An A\C can only cool 20 degrees below the outside ambient temperature.

A gas mini-split system will also get you AC but I am not sure how well they work, you need to pick the system based on the temperature in your area.   

I had nine bags to load into my trunk, drive to the far corner of the lot and toss into the dumpster in -2 temperatures with a -11 wind chill.

Person was asking on a new Enclosed Self Storage location they are about to open whether it should be listed as Climate or Temperature controlled. 

The temperature in Eastern WA is constantly going above and below freezing and ice is just a fact of life in the winter here.