Sargent 8271-24V Lnb 26D Electrified Mortise Lock

Product Description

The SARGENT 8271-24V LNB 26D is a fail-secure electrified mortise lock designed for access-controlled door applications in commercial and institutional buildings. Operating on 24 volts, this lock remains locked when power is interrupted, making it the correct choice for security-critical openings where controlled egress is required. It features an LN rose trim and a B lever handle in a Satin Chrome (26D) finish. Installation is typically performed by licensed locksmiths or door hardware specialists working alongside low-voltage access control technicians.

This electrified mortise lock is suited for commercial interior and perimeter doors requiring integrated access control. Common applications include office suites, secured corridors, and institutional facilities where credential-based entry is required on one side while allowing free egress on the other. The fail-secure function ensures the door remains locked during a power loss event, which is a common code requirement for high-security openings.

Key Features

• Fail-secure operation: lock remains engaged when power is lost
• 24-volt electrified operation for compatibility with standard access control power supplies
• LN rose trim provides a low-profile, clean mounting appearance
• B lever design for ADA-compatible door hardware configurations
• Satin Chrome (26D) finish for corrosion resistance and a professional appearance
• Mortise lock body for heavy-duty commercial door applications

Compatibility

Designed as an OEM-style electrified mortise lock replacement or new installation for commercial doors prepared to accept standard mortise lock pocket dimensions.

Installation Notes

Installation should be performed by a qualified locksmith or door hardware technician with experience in electrified hardware and low-voltage wiring. Disconnect and lock out all access control power supplies before servicing the lock or running wiring through the door. Wiring through door frames and hinges must comply with applicable local building codes and NFPA 70 (NEC) requirements for low-voltage installations. Verify the door prep and mortise pocket dimensions before installation to ensure proper fit and function.