DHL032 - Wall Mounted Magnetic Door Holder (Brand: )

The DHL032 door holder is a fail safe unit energized by a power supply installed on a large scale building, between fire escape doors.

It releases the armature plate allowing the door closer to close the door when the prevention system detects a fire alarm or emergency.
The electromagnetic door holder are constructed with a PUSH OFF button on magnet for instant release, the door can open or close manually at any time.