Does what it's supposed to, with help.
Your review: My A/C guy installed the receiver where my old thermostat was. It was easy. He is not a computer programmer, but he got the advanced settings correct for the unit to work properly.
However, if you want to use this as a regular thermostat and not program it, you have to watch out for setting number 54 in the advanced settings. This is the "HOLD" function. If it is not set to ZERO, your hold will turn off at some point. However, the folks at PECO were VERY helpful and I got the problem fixed quickly. Good, friendly, human, American support! This works!
Now I have the thermostat where I want it, not where it was, under the vent. We were either sweating or freezing. No more!
It was on backorder for weeks at Global. However, it was Christmas time 2012.