Nest Smart Thermostat
http://amzn.to/1GvKR0z

Recently installed a Nest thermostat for a client and the homeowner was having trouble with adjusting the air conditioning. So, we returned to troubleshoot the problem. He originally had a Honeywell thermostat, so we were comparing/contrasting the way in which the color-coded wires were configured behind the faceplate.

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