If you're in the market for a "smart" thermostat, but don't want to shell out the cash for a Nest, then this deal might be for you. Home Depot is currently offering the Honeywell Wi-Fi thermostat for $79, a savings of $70. But you need to act fast. This sale is the "Online Exclusive Special Buy of the Day," which, as that mouthful of a title might suggest, means that time is limited.

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