Purpose: Used in the smoke exhaust system of the building's aisle or anti-smoke front room and windowless room, installed on the wall or ceiling, used as a smoke exhaust or air outlet

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

Material: ordinary steel plate

1. Normally closed, input DC24V power supply to open the valve quickly

2. Long-distance (about 6m) manual opening or closing by steel rope

3. Output valve opening signal.