There is no need to run any extra cables as the sensors themselves are wireless and battery-powered.* They work like thermostats and monitor the temperature of each room or zone that you place in your house. AirTouch receives the temperature information from your ITSs and responds by adjusting airflow where necessary to help maintain your chosen set point for each zone. You can also check up on the temperature of each zone from the touch panel or app. They also double as a handy additional On/Off switch for the airflow in each zone.