Remote controlled unlocking mechanism
Mechanism, which unlatches the smoke evacuation damper blade via remote control by sending an electric impulse or by interruption of the magnet's power supply.
The internal torsion spring unwinds and releases the damper blade into its safety position.
To indicate the open or closed position of the fire damper blade the mechanism is standard provided with an end and begin of range switch FDCU.
Rearmation can be done manually, or remote controlled by an electric rearmation motor