Electric Door Hold Open Device

These exit devices hold swinging doors open in normal use and release and close doors in fire conditions.

Electric door hold open device.

This is extremely useful in long hospital hallways and corridors. They provide a high holding force. Lcn sentronic door closers and holders are designed to work with fire and smoke detection and containment systems. 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.

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. Electro magnets for hold open 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. These electromagnetic door holders will keep the door open.

On commercial fire doors the magnetic fire door holders serves an array of purposes and safety functions. For example the most common use is using the magnetic door holder as a hold open device. 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.