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DH-503 Electro magnetic door holder with extension

Wholesale Price (QTY 5+):

Extended electromagnetic door holder for fire and smoke. Installed on doors which are connected with the building’s fire and smoke alarm system. Our extended electromagnetic door holders are fire tested, so when an alarm is set off the device automatically closes the doors to stop fire and smoke from spreading.



Dimension: Magnet – L80 x W80 x H97mm (50mm dia)

Armature – L60 x W60 x H55.5mm (53mm dia)

Dual voltage: 12VDC / 24VDC

Current Draw: 100mA / 12VDC, 50mA / 24VDC

Holding force: 100lbs

Built in spike suppressor

No residual magnetism


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

Wall mounted installation

Adjustable armature plate


The product has a limited warranty against defects in material and workmanship while used in normal service for a period of 1 year from the date of sale to the original client. The Guardall policy is one of continual development and improvement, therefore Guardall reserves the right to change specifications without notice.

Quantity Discount (%) Price
1 - 4 $86.36
5+ 16.85 % $71.81