The electric fire damper opens by electric, and the modes of closing include:

• Cut off the ari supply on the spot and close the damper.
• The remote control center to cut off the air supply and close the damper.
• When the ambient temperature reaches 68~72deg.  and the action of automatic blocking and eliminating is executed.
• The electric actuator includes AC220V and DC24V, the users can choose them.

Return to the breeze fire prevention breeze, have the dynamoelectric to shut and move the shut two kinds of  forms. When the ambient temperature reaches 68~72 deg., automatic close of the breeze.