Electric Door Hold Open Device

In the event of a power failure they release the door to a closed position to keep the facility secure.

Electric door hold open device.

These electromagnetic door holders will keep the door open. For example the most common use is using the magnetic door holder as a hold open device. This is extremely useful in long hospital hallways and corridors. These exit devices hold swinging doors open in normal use and release and close doors in fire conditions.

Lcn sentronic door closers and holders are designed to work with fire and smoke detection and containment systems. The trigger mechanism is used for processing signals issued by fire alarm system and the hold open mechanism works with electrical hold open or holding magnet. On commercial fire doors the magnetic fire door holders serves an array of purposes and safety functions. The statutory regulations which apply in many countries allow fire and smoke check doors to be held open for a limited period of time by electro magnetic hold open devices which in the event of a fire are de energized to release the door so as to enable automatic closing.

They provide a high holding force. Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices. Electro magnets for hold open systems.