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Sargent 28-10XG71 LL Electric Lockset Fail Secure, Cylindrical Lockset, Grade 1 Heavy Duty
Function Information:
The Sargent 28-10XG71 LL with the RX Monitoring option is a high-security, electrified access control solution designed for perimeter protection and restricted interior zones. Operating as a Fail Secure (Power-to-Unlock) device, this lockset ensures the outside lever remains locked during a power failure, maintaining the security of the opening. Access is granted via an electronic signal (card reader, keypad, or biometric) or a physical key override. Built on the ultra-durable Sargent 10X Line chassis, it is engineered for high-abuse environments where mechanical reliability is just as critical as electronic security.
Advanced RX Monitoring with Patent-Pending Technology
The optional RX (Request-to-Exit) Monitoring of the inside lever provides essential feedback for sophisticated security systems. This feature utilizes a Patent Pending design with a Non-Contact Switch. Unlike traditional mechanical switches that rely on physical contact and are prone to wear, the non-contact sensor offers superior longevity and near-infinite reliability.
- Bidirectional Lever Rotation: The sensor accurately detects egress regardless of which direction the interior lever is turned.
- Non-Handed Design: The internal monitoring components are fully reversible, simplifying field installation and stock management.
- Internal Switch Flexibility: Offers both Normally Open (N/O) and Normally Closed (N/C) contacts to match any access control panel configuration.
- Broad Compatibility: This advanced RX technology is also available on several other 10X models, including functions 04, 05, 15, 37, and 70.
Industry-Leading Strength and Cycle Life
The Sargent 10X Line is the benchmark for institutional hardware. While standard Grade 1 locks are tested to 1 million cycles, the 10X series is UL-verified to exceed 20 million cycles—providing 20 times the service life of ordinary locks. It is designed to withstand 3,100 in-lb of abusive torque and 1,600 lbs of offset pull. The freewheeling locked lever design allows the outside handle to rotate freely when power is removed (locked state), protecting the internal solenoid and clutch from vandalism or forced entry attempts.
Key Product Features
- Fail Secure Function (71): Power-to-Unlock; the door remains locked during power loss to maintain maximum security.
- Request-to-Exit (RX): Integrated monitoring provides a digital audit trail of every exit, reducing "door forced" false alarms.
- ElectroLynx® Connectivity: Features a modular wire harness with an 8-pin connector (QC8) for a standardized, plug-and-play installation.
- EcoFlex® Technology: High-efficiency actuator reduces power consumption by up to 92%, allowing for more locks per power supply.
- ADA & Life Safety: The ergonomic LL lever is fully accessible and UL/cUL Listed for 3-hour fire doors.
- Severe Weather Rated: Certified for high-velocity hurricane zones and windstorm resistance (Florida Building Code compliant).
Technical Specifications
| Feature | Details |
| Function | 71 Electrified Fail Secure with Optional RX Monitoring |
| Switch Type | Patent-Pending Non-Contact Switch |
| Wiring | ElectroLynx® 8-Pin (QC8) Modular System |
| Operating Voltage | 12VDC or 24VDC (Field Selectable/Regulated) |
| Performance | UL Verified 20 Million Cycles |
| Backset | 2-3/4" (Standard) |
| Strike | 808 Curved Lip ANSI 4-7/8" |
| Warranty | 10-Year Mechanical / 2-Year Electrical |
Ideal Applications
- Perimeter Security: Entrances requiring "Normally Locked" status even during power outages.
- IT & Data Centers: High-value asset protection with integrated egress monitoring for audit trails.
- Educational Facilities: Securing labs and administrative offices with centralized access control.
- Healthcare Systems: Controlling access to pharmacies or sensitive medical records with reliable mechanical override.
Ordering & Installation Information
The Sargent 28-10XG71 LL RX is designed for rapid integration into existing door preps. For doors thicker than 2", please specify the 31- Option. This electrified chassis is fully compatible with Sargent High-Security Key Systems, including Degree®, Signature, and Keso, ensuring a secure physical override.
| Finish with BHMA code | 626 - US26D Satin Chrome or 613 - US10B Oil Rubbed Bronze or 613E - US10BE Oil Rubbed Bronze Equal or 605 - US3 Polish Brass or 606 - US4 Satin Brass or 612 - US10 Satin Bronze or 625 - US26 Polish Chrome |
| Voltage | 12 VDC or 24 VDC |
| Sargent Cylinder Options | KD - LA Kwy Keyed Different or SC - Schlage C Kwy 0 Bitted or 60 prefix - Sargent LFIC Prep Less Core or 70 prefix - Best/Falcon SFIC Prep Less Core or LC - Less Sgt Cylinder |
| RX Monitoring | No Monitoring Required or RX Switch Monitoring of Inside Lever |
| Brand | Sargent |
| ANSI Cyl Lock Function | Fail Secure |
| Trim Design | LL |
| Series | Sargent - 10X Line |
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