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M390RFK Retrofit Mag Locks

Electromagnetic lock with 1,500 lb. hold force rating. Direct retrofit for Locknetics 390+ model; install on single outswinging doors.


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The Schlage M390RFK lock is specifically designed to retrofit the Locknetics 390+ magnetic lock with no additional preparation. Its modular design employs a standardized circuit board with easy-to-install connectors, adjustable mounting brackets and integrated mounting screws. The M390RFK can interface with most electronic access control systems, as well as automatic door operators. It can also interface with fire or other hazard sensing systems for egress and emergency egress.

All Schlage electromagnetic locks come with a limited lifetime warranty on the magnetic coil assembly for added confidence in the longevity of these robust products. 

 Dual Voltage 12/24 VDC

 Field Configurable

 Monitoring Options

 Status Indicator

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Mag Locks

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


  • Direct retrofit for the Locknetics 390+ mag lock for outswinging doors
  • Maximum security: 1,500 lb. rated hold force 
  • Fail-safe operation on single doors



  • Automatic voltage selection (AVS) for 12 and 24 VDC
  • Adjustable mounting bracket and integrated mounting screws
  • Easy-to-install connectors and fire alarm terminals



  • Connects to most access control systems
  • Includes magnetic bond sensor (MBS), adjustable relock time delay and door position switch

M390RFK model

  • Standard features include automatic voltage selection (AVS), door status monitor (DSM), magnetic bond sensor with LED indicator (MBS) and a relocking time delay (RTD) of 0-110 seconds
  • Adjustable mounting brackets 


Single door

  • M390RFK for outswinging doors with 1,500 lb. hold force
  • Current draw .65A @ 12 VDC, .45A @ 24 VDC
  • Dimensions: 2-7/8" H x 10-1/2" L x 1-5/8" D
  • Weight: 12.4 lbs.


Operating temperature

  • Temperature 0° to 49°C (32° to 120° F)



  • Aluminum housing in 628 satin finish
  • UL 10C  listed for positive pressure fire tests of door assemblies: 3 hour
  • ANSI/BHMA A156.23 Grade 1
  • cUL
  • UL294 listed for access control system 

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In accordance with California PROP65 - WARNING WARNING: Cancer & Reproductive Harm

Need Replacement Parts?

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Additional Resources

Did You Know?

The innovative Schlage Control™ Mobile Enabled Smart Locks were introduced in 2019 for the multifamily market—allowing residents to use their mobile phone as a key to their apartment.

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As part of Allegion’s family of pioneering brands, Schlage benefits from the strength, efficiencies, resources, and integration from a global power. In turn, we pass those advantages on to you.

Allegion helps keep people safe and secure where they live, work and visit. With more than 30 brands sold worldwide, we specialize in security around the doorway and beyond. It’s the power of one.

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