Sargent 8271 LNL US26D Electric Mortise Lockset - Fail Secure, Unlocks Outside Lever

The Sargent 8271 LNL is a premier Grade 1 Heavy-Duty Electrified Mortise Lockset engineered for high-security access control integration. Built upon the legendary Sargent 8200 Series chassis, this lockset provides the ultimate combination of physical strength and electronic versatility. The 8271 Fail Secure Function is the industry standard for perimeter security and sensitive interior rooms, ensuring the door remains locked and bolted even during a total power failure to prevent unauthorized entry.

Advanced Electrified Control (71 Function - Fail Secure)

The 8271 function operates on a "Power-to-Unlock" logic, making it the primary choice for IT rooms, evidence storage, and primary building entrances where security must be maintained at all times.

• Fail Secure Logic (Power ON, Unlocks Outside Lever): In its default state (power off), the outside lever is locked. Access is granted only when an electronic signal from a card reader or keypad is sent to the lock.
  
• Mechanical Key Override: For emergency or backup access, a physical key in the Sargent LA Keyway always retracts the latchbolt from the exterior, regardless of power status.
• Universal Voltage Compatibility: The high-efficiency solenoid is designed to operate on either 12VDC or 24VDC (regulated), offering maximum flexibility for diverse security power supplies.
  
• Constant Free Egress: To ensure compliance with NFPA 101 Life Safety and ADA codes, the inside lever always retracts the latchbolt for immediate, unhindered exit.
  
• Auxiliary Deadlatch: Features a stainless steel deadlatch that prevents "shimming" or unauthorized manipulation of the latchbolt when the door is closed.
  

Architectural LNL Trim & US26D Finish

The LNL trim configuration combines the high-strength LN Escutcheon with the ergonomic L Lever, finished in a brilliant US26D Satin Chrome.

• LN Escutcheon Plate: A heavy-duty wrought metal escutcheon that reinforces the door and provides a clean, professional appearance.
  
• L Lever Design: A sleek, linear profile that is fully ADA compliant, ensuring easy operation for all users.
  
• Unrivaled Durability: Independently verified to withstand 14 million cycles—14 times the requirement for Grade 1 certification—ensuring the lowest total cost of ownership in high-traffic commercial environments.

Critical Installation Component: The QC8 Hinge

To ensure the long-term reliability and performance of your electrified opening, it is recommended to use a QC8 Hinge with the Sargent 8271 LNL lockset.

• QC8 ElectroLynx® Integration: The McKinney QC8 Hinge features an 8-pin connector that provides a seamless, concealed power transfer from the door frame to the lockset.
  
• Plug-and-Play Reliability: Utilizing the QC8 hinge eliminates the need for field-soldering or wire nutting, significantly reducing installation time and the potential for wiring failures.
• Wire Protection: Unlike surface-mounted door cords, the QC8 hinge protects the 8-wire harness within the hinge itself, preventing wire fatigue and pinching during the hundreds of thousands of cycles the door will experience.

Key Product Features

• ANSI/BHMA Grade 1 Certified: The highest mechanical rating for commercial hardware durability and security.
• Electrified Fail Secure (F71): Defaults to a "locked" state during power loss to maintain building security.
• Low Power Consumption: Optimized solenoid design draws minimal current, allowing for more locks per power supply.
• UL/cUL Listed: Rated for use on 3-hour fire-rated doors, maintaining strict fire barrier integrity.
• Vandal-Resistant Chassis: Constructed with a 12-gauge heavy-duty wrought steel lock case that is zinc dichromate plated for corrosion resistance.

Technical Specifications

Ordering & Installation Information

The Sargent 8271 LNL is designed for high-end facility protection. For new construction or retrofits, ensure the door is pre-drilled for ElectroLynx® wiring to take advantage of the QC8 8-pin system. This hardware is fully compatible with Sargent High-Security Key Systems, including Degree® and Signature.