Where air ducts are used, monitoring them is necessary for a compliant installation. International standards and codes recognize that air duct systems can transfer smoke, toxic gases, or flames from one area to another, thereby multiplying the risk of accidents, panic, and property damage. One of the main purposes of this type of control is to reduce the spread of smoke through recirculation, and to achieve this, an efficient detection system is essential to enable an immediate response by stopping fans and closing dampers. Inim everything you need for this type of application.