The difference between the door closer and the sequencer

- Mar 24, 2019-

A door closer is a device that automatically closes a fire door, and a sequencer is a device that ensures that a double mountain fire door can be closed in a reasonable order in the event of a fire.

The door closer is mounted on the door, a spring-like hydraulic device that returns to the initial position accurately, promptly and automatically. The sequencer has an actuating mechanism that closes the door in turn when the fire requires it.