We all know the real cost of a BAS lies in the installation labor. Often when there is an existing BAS in place, the space temperature sensors used on original install were 10K Type II thermistors, or at the very least had a 2 wire run to their location from the controller. This can also be a good option when you want to conceal the Smart Stat somewhere secure.
75F offers the option to use a 10K Type II thermistor as the primary space temperature sensor when temperature is all you are concerned with and the circumstances call for it. This application will not work with 2 pipe fan coils.
Using the TH2 port on the Smart Stat and enabling the TH 2 port as an external temperature sensor, you will use the remote thermistor rather than the on board sensor.
Wiring
Configuration
Navigate to Setup > Floor Plan > The zone you wish to configure.
Enable "Use External 10k Temp Sensor (Th2)
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