EXAMPLE :

• DH503 : Wall mounted, w/adjustable armature plate, extended type
• DH503S : Wall mounted, w/adjustable armature plate, extended type, monitored
• DH503F : Wall mounted, w/fixed armature plate, extended type
• DH503B : Wall mounted, w/adjustable armature plate, extended type, w/release switch

 SPECIFICATION : 

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

FEATURES :

• Suitable for fire escape doors in largescale 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.
• With Release Switch : to release the door for other purposes (e.g. function test)
  (DH 503B only)
• Adjustable, fixed, extended, or morticed armature plate

• Catalog DH503
• Instructions DH503