We all have some sort of thermostat controlling our heating and cooling in our homes. It may be a simple rotary dial thermostat that uses a mercury switch or a digital thermostat that is often a programmable thermostat. These can be programmed for individual days and times to change the temperature in your home. Often these save you money by limiting the amount of heating or cooling based on whether you are home or not. Now there comes a new thermostat that can do it all and more! Yes, it not only can be programmed, but actually learns your heating and cooling routines. It's called "Nest - The Learning Thermostat".
...Source: http://electrical.about.com/b/2013/12/08/thermostat-with-a-brain.htm
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