Purpose: Used in the smoke exhaust system of the building's aisle, smoke-proof front room, and windowless room, installed on the wall, top plate, and used as a smoke exhaust port or air supply port.

In the event of a fire, open the air outlet through the DC24V power supply or manually to exhaust smoke or supply air.

Material: aluminum profile, galvanized steel sheet/ordinary steel sheet

Function: 1. Normally closed state, input DC24V power supply to make the valve open quickly.

         2. Manual opening and manual resetting.

         3. Output valve opening signal

         4. Yuan distance control (steel rope does not invite 6m)