The answer to 'difference between thermostat and' is that a thermostat is a device that controls the temperature in a building, while a sensor is a device that measures and monitors temperature and other environmental conditions. Thermostats are used to set the desired temperature and turn the HVAC system on and off to maintain that temperature, while sensors simply measure and report the temperature without controlling the system.
Thermostats typically have user-friendly controls and displays that allow homeowners to easily adjust the temperature setpoint, schedule temperature changes, and monitor the system's operation. Sensors, on the other hand, are often more basic devices that connect to a central control system or smart home platform to provide temperature data but don't have direct control over the HVAC equipment.