Thermostat rond non programmable Honeywell Home CT87K

This is the second one that I have bought in the past 4 months. Neither one works for the cooling. It works fine for heat, but it does not respond when I set it for air conditioning.

2.5 months and not working. Will turn on blower but not the furnace.

I thought I was buying a simple, non-digital thermostat, but nowhere does it mention that this thermostat is digital. The box also doesn't say anything about needing a battery or letting a super capacitor charge up before the thermostat will work. It also doesn't mention the operating voltages. My furnace operates at 12 volts, but this thermostat requires 24 volts. They managed to make something as simple as a two-wire switch as complicated as possible. Good job over-engineering the simplest thing. Oh, and it's not even the same color as what is displayed on the box. I thought I was buying the classic thermostat from 30 years ago, but this product is not what I expected

Doesn't work at all. The manual doesn't show battery replacement info. or insertion direction. and no info on basic contact closure output. Why did I receive it with a 3.3V battery that indicates 2.8V, unloaded, aka removed from product?

This “old school” thermostat is 10x better than all the digital programmable thermostats. My digital thermostat was causing a short cycle and costing me money. Got rid of all the fancy stuff and went to an old school Honeywell round Thermostat. No problems and electric bill has dropped!