11. Wiring Terminals(V Power For Heating → V Power For Cooling → V Common Wire → Fan → St Stage Outdoor Cooling On Conventional Systems Or 1st Heat And Cool On Heat Pump Systems. → St Stage Indoor Heat On Conventional Systems Or Changeover (reversing Valve) Connection For Heat Pump Or Zone Panel Systems. → The C-wire, Or 'common Wire' Enables The Continuous Flow Of 24 Vac Power To The Thermostat.)
12. Back Of The Thermostat(Device Id → Model Number → Warning: Class 2 Low Voltage → Requires 24 Vac Power ('c' Wire) → Daisy Wi-fi Thermostat / User Guide)