Positive pressure air supply port

Positive pressure air supply outlets are generally installed in front of corridors or smoke control rooms, on the smoke exhaust system of windowless rooms. The air supply outlets are installed in the smoke control front room, usually on the side wall, and are usually in a normally closed state. When a fire occurs, the smoke detector sends out a fire alarm signal, and the control center supplies DC24V to the control mechanism on the smoke exhaust outlet to quickly open it. It can also be manually used for smoke exhaust.