In order to control your Honeywell thermostat remotely through the internet, you must run through the Honeywell WiFi thermostat registration routine at the Honeywell Total Connect Comfort (TCC) web site. So here, we walk you through that on the RTH9580WF smart thermostat. Honeywell WiFi Thermostat Registration Instructions: First Steps 1. Install your Honeywell WiFi … Continue reading Honeywell WiFi Thermostat Registration Instructions