A duct temperature sensor is a device used to measure the temperature of air passing through a duct. It is typically installed in a heating, ventilation, and air conditioning (HVAC) system to monitor the temperature of the air passing through the duct. The duct temperature sensor is used to ensure that the air passing through the duct is at the desired temperature. It can also be used to detect changes in temperature that could indicate a problem with the HVAC system. The duct temperature sensor is an important part of the HVAC system, as it helps to ensure that the air passing through the duct is at the desired temperature. It is also used to monitor the temperature of the air passing through the duct, so that any changes in temperature can be detected and addressed quickly. The duct temperature sensor is an essential part of any HVAC system, as it helps to ensure that the air passing through the duct is at the desired temperature.