Min. Order Reference FOB Price
1 Piece US$15.00-90.00 / Piece
Product Description
Smoke Exhaust fire damper Smoke exhaust fire damper is generally installed on the air duct of the smoke exhaust system.It is normally open.When a fire occurs,the smoke detector emits a fire alarm signal.The control center use the DC24V signal to exhaust smoke.When the flue temperature reaches ...