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The SDC Security Door Controls E300 is a magnetic lock designed for access control applications in commercial and institutional door hardware installations. The unit incorporates an LED status indicator that provides a visible signal of the lock's energized or de-energized state, giving installers and technicians a quick reference point during commissioning and troubleshooting. Magnetic locks of this type operate by generating an electromagnetic holding force between a magnet body and an armature plate, securing the door leaf without mechanical latch components. This model is sold as a single unit and is installed by licensed access control or low-voltage technicians.
The E300 is suited for commercial interior and perimeter door applications where electric locking is required, including office entries, stairwell doors, and controlled-access corridors. The integrated LED simplifies field verification of lock status without requiring a separate test tool. It is commonly specified in new construction and retrofit projects where fail-safe or fail-secure electromagnetic locking is part of the access control design. Installation typically follows low-voltage wiring practices and must comply with applicable fire and life safety codes governing egress door hardware.
Designed as an OEM-style electromagnetic lock for commercial access control door hardware applications.
Installation should be performed by a licensed low-voltage or access control technician in accordance with NEC Article 725 requirements for Class 2 circuits. De-energize and lock out the access control power supply before mounting or wiring the unit. Verify door frame alignment and armature plate surface contact to achieve full holding force. Confirm that egress hardware and release provisions comply with local fire and life safety codes before placing the system in service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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