Add Smart Room Sensors around your home so your T9 Smart Thermostat can see each room’s temperature and humidity. Choose specific rooms to regulate the overall house or let the sensors focus on rooms people are in with motion sensing technology. Smart Sensors have a signal that can reach up to 200 feet and penetrate walls and floors across the home. This increases the quality of the data, allowing for greater accuracy and comfort control. Smart Room Sensors help you experience the right temperature in the right rooms. Get whole home temperature control based on room occupancy, or prioritize specific rooms. Simple and discreet, these battery powered sensors have a long range to control the whole home. (To be used with T9 Smart Thermostats.)