How to replace a Honeywell T498B1512 Thermostat with a Mysa Smart Thermostat

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Disclaimer: Warning! These instructions include configuring high voltage wiring. There is a possibility of shock, death, and fire. You must know what you are doing and check your local codes if you are allowed to make these changes without hiring a professional electrician (not a handy man or your nephew). Proceed at your own risk.… Continue reading How to replace a Honeywell T498B1512 Thermostat with a Mysa Smart Thermostat