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. 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. This is extremely useful in long hospital hallways and corridors. They provide a high holding force.

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

On commercial fire doors the magnetic fire door holders serves an array of purposes and safety functions. Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices. These electromagnetic door holders will keep the door open.