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SL1/SK1 Electrified Ligature-resistant Trims

Using the L Series chassis with smooth, tapered levers or knobs and concealed fasteners, these trim options are available in 22 mechanical and 9 electrified functions.


Looking for more information? Connect with an Allegion team member for help.


SL1 (lever) and SK1 (knob) trims are specifically designed with multiple safety facets including recessed trim, sloped surfaces and concealed fastening hardware to reduce the risk of injury or death due to ligature strangulation in hospitals, behavioral health facilities and detention centers. Additionally, the motorized operation is also quieter than solenoid-based designs to help contribute to healing environments.  Optional key override adds an anti-barricade safety feature on two functions helping prevent self-harm situations by allowing the key to override a  thumbturn being held in a locked position. 

Ideal for use on:    

  • Low- to medium-risk behavioral health facility doors
  • Secured-use hospital room doors
  • Detention center doors

 Heavy Duty

 Monitoring Options

 Primus Upgradeable

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Electrified Locks

For frequently asked questions, educational resources and technical product materials visit the Electrified Locks 101 page. 


  • Ligature-resistant designs positively contribute to healing environments - lever style is also ADA compliant 
  • Tested and certified to ANSI/BHMA Grade 1 operational and security standards
  • UL listed for 3-hour fire door; spring-loaded fusible link inside lock case provides fail secure mode in case of fire   
  • Available lead lining for use in X-ray or other rooms with radiation concern
  • Deadbolt functions include anti-saw pin in bolt to prevent cut-through
  • Lock monitoring options include request to exit (RX), latchbolt (LX), door postion (DPS), and deadbolt (DM) (availability varies by function)
  • Patented Everest 29™ S123 keyway is provided standard which prohibits unauthorized key duplication 
  • Restricted geographically exclusive Primus upgraded security options offer advanced key control and exceptional physical security



  • Smooth, sloped surface design with concealed fastening 
  • Available in 630 Satin Stainless Steel finish with an antimicrobial coating option
  • Deadbolt functions also feature a ligature-resistant thumbturn
  • Low holding current produces minimal heat, eliminating “hot levers” in electrically locking applications
  • Quiet, motorized activation      
  • See HSLR ligature-resistant mortise trim for other designs in health care solutions



  • Nine keyed and non-keyed electrified functions
  • Two electrified functions offer optional key override of the inside thumbturn when it is being held in the locked position to stop unwanted barricade situations
  • 22 additional non-electrified SK1/SL1 ligature-resistant trim functions available (see separate web page for details)


Installation simplicity

  • Auto detects 12 or 24V DC
  • Low maximum current draw allows multiple locks on a single power supply
  • Case-mounted switch allows field selectable fail safe/fail secure setting    
  • Modular design allows RX feature to be added at a later time without opening the lock case


Built to Last

  • Two piece anti-friction tongue in latch bolt reduces wear
  • Breakaway spindle keeps door secured in the event of vandalism
  • Every Schlage lock undergoes intensive testing to determine its ANSI grade level including: cycle, resistance, door impact, warped door and bolt strength tests 

Electrified functions listed beginning with L/LV can be ordered with or without Vandlgard option. Both functions are field selectable Electrically Locked (EL) or Electrically Unlocked (EU). Optional key override is a safety feature, available on two functions, that allows the outside key to retract the deadbolt and/or latchbolt, depending on function, to override the inside thumbturn when it is being held in the locked position. 

Non-keyed functions

  • L/LV9090EL/EU Electrically locking/unlocking outside lever, no cylinder
  • L/LV9091EL/EU Electrically locking/unlocking both levers, no cylinder


Keyed non-deadbolt functions

  • L/LV9092EL/EU Electrically locking/unlocking outside lever, outside cylinder
  • L/LV9093EL/EU Electrically locking/unlocking both levers, outside cylinder
  • L/LV9095EL/EU Electrically locking/unlocking both levers, double cylinder


Keyed deadbolt functions

  • L/LV9492EL/EU Electrically locking/unlocking outside lever, outside cylinder, inside thumbturn with deadbolt and optional key override feature
  • L/LV9493EL/EU Electrically locking/unlocking both levers, outside cylinder, inside thumbturn with deadbolt and optional key override feature
  • L/LV9494EL/EU Electrically locking/unlocking outside lever, double cylinder with deadbolt
  • L/LV9495EL/EU Electrically locking/unlocking both levers, double cylinder with deadbolt


Other electrified function options




  • Case: Cold Rolled Steel (CRS) with corrosion resistant zinc dichromate plating
  • Case size: 4-7/16" x 6 1/16" x 1" (113 mm x 154 mm x 25 mm)
  • Spacing: knob or lever to cylinder 3-7/8" (98 mm); knob or lever to thumbturn hub 2-11/16" (68 mm)
  • Door thickness: 1-3/4" (44 mm) standard
  • Field reversible handing


Trim Options 

  • Lever and knob designs made of stainless steel  
  • Dimensions: SL1 3-7/32" x 6-1/8" x 3-1/8" (83 mm x 155 mm x 80 mm); SK1 3-3/16" x 3-3/16" x 2-5/16" (81 mm x 81 mm x 58 mm); thumbturn 2-11/16" x 2-11/16" x 1-3/32" (69 mm x 69 mm x 28 mm)                    
  • Available 1/8" thick lock case lead lining option for use in X-ray or other rooms with radiation concern



  • Backset: 2-3/4" (70 mm) only
  • Armor: Standard - 1-1⁄4" x 8" x 7⁄32" (32 mm x 203 mm x 6 mm); Optional - 1-1⁄16" x 8" x 7⁄32"  (27 mm x 203 mm x 6 mm) 
  • Deadbolt: 1" (25 mm) throw stainless steel
  • Latch: 3⁄4" (19 mm) throw stainless steel with anti-friction tongue
  • Strike: ANSI curved lip strike 1-1⁄4" x 4-7⁄8" (32 mm x 124 mm) standard; dust box included
  • Strike lip length: 1-3⁄16" (30 mm); optional extended lip strikes - 7⁄8", 1", 1-1⁄2", 1-3⁄4", and 2"  



  • Input voltage: auto detects 12-24V DC 
  • Operating mode: Fail Safe or Fail Secure via switch on chassis
  • Current draw: 12V operating voltage: Max input current requirement is 1A. 24V operating voltage: Max input current requirement is 0.4A
  • Holding current: 0.1A
  • Request to exit: modular - 3A @ 125VAC /2A @ 30VDC


  • ANSI/BHMA A156.13-2017 Series 1000, Grade 1 operational and security 
  • With FSIC interchangeable core cylinders: Grade 1 operational, Grade 2 security
  • With SFIC interchangeable core cylinders: Grade 1 operational, Grade 3 security



  • Complies with ICC A117.1 Accessible and Usable Buildings and Facilities (lever only)



  • UL 10C and CAN/ULC-S104 listed 3-hour fire door (except L9076 and L9077)
    • A label single doors, 4' x 10' and pairs 8' x 10' 
    • Letter F and UL symbol on latch front indicate listing
  • UL 437 listed when using Primus high-security UL 437 cylinder
  • UL 294 access control performance levels
    • Destructive attack, Level 1
    • Line security, Level 1
    • Standby power, Level 1
    • Endurance, Level IV (with DM, or LX - Endurance, Level I)  
  • ULC-S319 Class III 



  • Miami-Dade NOA and Florida Building Commission listings
  • Texas Department of Insurance (TDI) for impact and non-impact applications



  • Meets BAA (Buy American Act)

Mortise lock and cylinder front housing finishes

630 Satin stainless steel

630 Satin stainless steel

630AM Satin stainless steel with antimicrobial coating

630AM Satin stainless steel with antimicrobial coating

Key cylinder, plug and core face finishes

626 Satin chrome

626 Satin chrome

Open keyways upgradeable to Primus RP


Patented keyways upgradeable to Primus XP

  • Everest 29™ S keyways include S123 (default keyway)
  • Everest 29™ T restricted keyways 
  • Everest 29™ R restricted keyways as SL cylinders in conventional or FSIC formats with the same A2 pinning style of an SFIC cylinders
  • Everest 29™ keyways gain restricted, geography exclusivity in a Primus XP cylinder
  • Available in Conventional and FSIC cylinder formats


Small Format Interchangeable Cores (SFIC)

  • Everest 29™ R restricted keyway family


Master Keying

  • Factory master keying available

Need Replacement Parts?

Get the resources you need to get in touch with an Allegion team member for Schlage replacement parts.


Additional Resources

Did You Know?

Schlage changed the game in commercial electronics by launching the AD Series platform in 2004—the first to feature interchangeable reader and communication modules.

Case Study

Allegion Insights

Understanding Ligature Risks in Health Care Facilities

The health care market, much like the nation, has paid more attention to behavioral health in the last decade. Hospitals have hired patient safety coordinators and facilities have installed hardware that’s designed to prevent injury or self-harm.

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