PFHF WSDc-K AK smoke extraction fire damper  Shinelong-19

Material : galvanized steel sheet

size: (WxH) according to air duct sizel

features: usually it is closed, when on fire, smoke temperature sensor output electric sigal (DC24V) through control center, and the electromagnet in the actuator acts, damper is automatically opened, then outputs open electric signal ;at temperature 280 C, the fuse will act and the damper is automatically closed.