Lcn SEM7830 689 Electromagnetic Door Holder

Product Description

The LCN SEM7830 689 is an electromagnetic door holder designed to hold open fire-rated and standard interior doors in commercial and institutional buildings. The unit uses electromagnetic force to keep a door in the open position and releases it automatically when power is interrupted, allowing the door to close under spring or closer pressure. The aluminum body and aluminum finish make it suited for installations where corrosion resistance and a neutral appearance are priorities. It weighs 2 pounds and is a straightforward drop-in component for door-holder circuits tied to fire alarm systems.

This electromagnetic door holder is used in commercial corridors, stairwells, and institutional spaces where doors must remain open during normal occupancy but close automatically during a fire alarm event. It is compatible with low-voltage door holder circuits and is typically installed as part of a coordinated fire and life safety package. The aluminum construction suits interior environments and light-duty vestibule applications. Facilities maintenance contractors, commercial door hardware installers, and licensed electricians are the primary trades involved in its installation.

Key Features

• Electromagnetic hold-open design releases door automatically on power loss
• Aluminum body construction for corrosion resistance and durability
• Aluminum finish (689) blends with standard commercial door hardware
• Lightweight at 2 pounds for straightforward surface mounting
• Compatible with standard low-voltage fire alarm door holder circuits

Compatibility

Designed as an OEM-style electromagnetic door holder for use in commercial door-hold-open systems that require automatic release upon fire alarm activation.

Installation Notes

Installation should be performed by a licensed electrician or qualified door hardware technician in accordance with NFPA 72 and applicable local building codes. Disconnect and lock out power to the door holder circuit before wiring or mounting. The door holder must be connected to a supervised circuit that de-energizes automatically upon fire alarm activation. Verify the mounting surface and door alignment before final fastening to ensure consistent electromagnetic contact.