0ur opinion: :Program thermostat ahead of time to turn on periodically throughout the day. Great for while you are away on vacation or at work. This works for heat- only or cool-only settings to keep the temperature comfortable when you arrive home.
:The Smart Temp programmable thermostat allows you to easily program up to four settings per day. lt also includes variable weekday and weekend settings, as well as an easy-to-read digital display. 0ther features include an on-screen low-battery indicator light, and a vacation hold setting. Designed for maximum versatility, the thermostat works with heat-only and cool-only systems, as well as gas or oil heat, electronic ignition systems, and millivolt systems.
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Testimonials
Average Buyer Rating:

Buyer's feedback: 
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* Programmable Thermostat Review ...
This is a great product. It was very easy to install for a novice like me and it is working perfectly.
Buyer's feedback: 
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Works wonderful
The TX500 works wonderfully. I preformed the installation myself, basically removing the old one, transferring the wires one by one, from the marked terminal of the old one, to the same marking terminal of the new one. Programming the system was easy, and I enjoy that you can take the unit off the wall to do so without having to unscrew anything, etc. Once I programmed it about 2 months ago I've hardly done anything to it since. The small display may bother some people, but all it displays is the day, time, and temperature. Of these all most people are worried about is the temp, and if you want you can glance at it to read it, but mostly I never look at it, because it keeps the inside temperature just find. On the other hand the small display uses very little electricity, which means changing the 2 AA batteries in the unit that much less, which I don't mind at all. Overall a great product. I picked it up because consumer reports rated it so high, and I agree with their rating.
Buyer's feedback: 
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* Happy Camper ...
The thermostat was perfect. I thought it was my heating system, which could have cost a fortune to fix. Instead it was just the thermostat, the picture you provided helped to chose the right one. Thank You
Buyer's feedback: 
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Ours stopped working after 8 years
This worked fine for us for a number of years, although I've never liked the weekday/weekend programming. If you're ever home sick or for a holiday, or anything outside your normal schedule, it's a pain to tell it that you're home and yes it really should heat the house.
But now that it's about eight years old, it just decided to stop turning on our furnace. The display registers the correct actual and target temperatures, but even if they are several degrees apart, the furnace will not turn on. If we remove it from the wall and replace it (as if to change the batteries), then the furnace finally kicks on. Today, even that stopped helping - I've replaced it on the wall to no avail - no heat! I'm freezing here while waiting for my new Honeywell thermostat to arrive.
Buyer's feedback: 
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* Love it. Buy this model. ...
This thermostat is great. Simple to use. Works well. Great price. Recommended by Consumer Reports.
Glad I replaced my old thermostat with this one. I even installed it myself, and with little difficulty.
Good buy.