My HVAC thermostat only have 2 wires : smarthome(02)

My HVAC thermostat only have 2 wires : smarthome(02)

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How To Connect A 2 Wire Thermostat My thermostat only has 2 wires. I’m trying to add a new thermostat, my My HVAC thermostat only have 2 wires : smarthome