mcr R-04xx expansion module is used for supplying a single group of 24V=actuators of total current consumption up to 48 A or 24 A, depending on variant.

actuators are used for opening flaps and windows of smoke exhausting system, as well as for daily ventilation. They are supplied by 24V- direct voltage. Casings cover is made of anodized aluminum. In standard, they feature anti-interference condenser, overload switch and limit switches.

are used for detecting visible smoke that appears during the majority of fires. It allows to detect smoke in its initial stage, where the material has just started to burn, which usually comes long before the outburst of open flame and the noticeable increase in temperature. The sensors feature resistance to wind, pressure changes and water vapour condensation. They have large sensitivity to visible smoke.

mcr RPO-1 manual desmoking button is used in desmoking systems for manual alarm triggering, and for indication of operating status of the desmoking unit. Additionally, the button allows for remote clearing of errors