you may need to gently lift the thermostat from the wall (if possible) to check. If it’s not possible to find the model number, you can turn off the power (if applicable), remove the thermostat from the wall,
With Smart Room Sensors, the T9 can know which rooms are in use so it can automatically focus on them. Intelligent motion detection algorithms help it tell the difference between someone passing through or spending time in a room, so your ideal comfort can efficiently follow you...