Sdc EH301224A Magnetic Door Holder

Product Description

The SDC - SECURITY DOOR CONTROLS EH301224A is a magnetic door holder designed to hold open fire-rated and non-rated doors in commercial and institutional buildings. Magnetic door holders work by energizing an electromagnet that grips a wall- or floor-mounted armature plate, keeping the door in an open position until the magnet is de-energized. When a fire alarm or access control signal is triggered, the magnet releases and allows the door to close under its own closer force. This type of device is commonly installed by commercial door hardware technicians, electrical contractors, and low-voltage integrators as part of a life safety or access control system.

The EH301224A is suited for use in corridors, stairwells, and common areas where doors must remain open during normal operations but must close automatically during an alarm event. Typical installations include hospitals, schools, office buildings, and multi-tenant residential facilities. The device integrates with fire alarm control panels and building automation systems that send a signal to release the door upon detection of smoke or fire conditions.

Key Features

• Electromagnetic hold-open mechanism releases automatically on alarm signal
• Designed for both fire-rated and standard door applications
• Sold as a single unit for individual door installations
• Compatible with standard door closer hardware for automatic close-on-release operation
• Supports integration with fire alarm control panels and low-voltage control systems

Compatibility

Designed as an OEM-style replacement or new-installation magnetic door holder for commercial door closer and holder systems requiring electromagnetic hold-open functionality.

Installation Notes

Installation should be performed by a licensed low-voltage technician or commercial door hardware installer familiar with local fire code and NFPA 80 requirements for fire door assemblies. Disconnect power to the control circuit before wiring the holder to the alarm system. Verify that the door closer is properly adjusted to ensure the door closes and latches fully when the magnet releases. Consult the authority having jurisdiction regarding inspection and testing requirements after installation.