Electric Door Hold Open Device

For example the most common use is using the magnetic door holder as a hold open device.

Electric door hold open device. 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. These exit devices hold swinging doors open in normal use and release and close doors in fire conditions. Geze single leaf hold open devices are used as as hold open system and allows for mechanism through which fire doors are maintained in open condition through electronic support. Electro magnets for hold open systems.

These electromagnetic door holders will keep the door open. Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices. Primary application includes holding and releasing of fire rated doors that are required to provide a barrier for fire and smoke in an emergency or the convenience of door closure by remote control. In the event of a power failure they release the door to a closed position to keep the facility secure.

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. S dc eh series magnetic door holders are designed to hold doors open and release the door by remote switch or fire life safety command center activation. Lcn sentronic door closers and holders are designed to work with fire and smoke detection and containment systems.