EXAMPLE :

• DH509 : Wall Flush Mounted, w/adjustable armature plate
• DH509S : Wall Flush Mounted,With Sensor , adjustable armature plate

SPECIFICATION :

• Holding Force : about 100LBS
• Built-in voltage spike suppressor
• Sensor : optional
• Adjustable Distance : 10 mm
• Voltage : 12V/ 24VDC (Selectable)
• Current Draw : 100mA/12VDC , 50mA/24VDC

FEATURES : 

• Wall flush mounted installation
• Suitable for fire escape doors in large-scale buildings.
• It releases the armature plate to allow the door closer to close the door when a fire alarm or emergency is detected, to keep smoke in a limited area. 
• Adjustable, fixed, extended, or morticed armature plate

• Catalog DH509
• Instructions DH509 (Chinese)