From the Manufacturer

A Honeywell programmable thermostat can save you significant money off your energy bill. You set it up to adjust the temperature when you are away or asleep—times when you don’t necessarily need to heat or cool your home to optimum comfort—and your heating and cooling equipment runs less. This one-piece thermostat has one easy program for all days of the week (4 periods – wake, leave, return, sleep). Simple and effective use and performance.

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