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M490/492 Mag Locks

Electromagnetic lock with 1,500 lb. hold force rating for high security applications; install on single or double doors.


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The Schlage M490 is used as part of an electronic access control system usually combined with request-to-exit devices and credential readers. Standard features include automatic voltage selection, field-selectable handing, and bayonet mounting bracket for easy hands-free installation. The "Plus" model adds intelligent sensing and reporting features needed for integration with access control systems.

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

 Heavy Duty

 Status Indicator

 Monitoring Options


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Mag Locks

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


  • Traffic control: 1,500 lb. rated hold force
  • Fail-safe operation on single or double doors
  • Optional mounting kits available for top jamb mount, double door and HERCULITE® brand glass doors



  • Automatic voltage selection (AVS) for 12 and 24 VDC
  • Bayonet design eliminates need to hold magnet overhead while mounting bracket is installed
  • Symmetrical design speeds in-field handing
  • Armature mount pivot feature compensates for slight opening imperfections for a better bond


Integration - “Plus” model

  • Connects to most access control systems
  • Includes magnetic bond sensor (MBS), adjustable relock time delay, and door position switch
  • Optional ATS/LED combines anti-tamper switch (with reporting capability) and with an LED visual status indicator of the magnetic bond at the lock

All M490 models

  • All models feature Automatic Voltage Selection (AVS) 
  • Plus featured models are designated with a "P" and include magnetic bond sensor (MBS), relocking time delay (RTD) and door position switch (DPS) 
  • Plus models have option for combined anti-tamper switch with magnetic bond sensor in one kit (ATS/LED)
  • Single door models convert to double with optional bracket
  • Optional accessories available for use on top jamb or with HERCULITE® brand glass doors


Single door

  • M490 and M490P with 1,500 lb. hold force
  • Current draw .65A @ 12 VDC, .35A @ 24 VDC
  • Dimensions: 3" H x 12-1/2" L x 1-3/4" D
  • Weight: 14 lbs.


Double door

  • M492 and M492P with 1,500 lb. per leaf hold force
  • Current draw 1.3A @ 12 VDC, .7A @ 24 VDC
  • Dimensions: 3" H x 25-1/16" L x 1-3/4" D
  • Weight: 28 lbs.


Operating temperature

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



  • Aluminum housing in 628 satin finish


Other technical info

  • Wire gauge 14-22 AWG
  • UL10C listed for positive pressure fire tests of door assemblies: 3 hour
  • UL1034 burglary-resistant electronic locking mechanisms 
  • UL 294 listed for access control system
  • ANSI/BHMA A156.23 Grade 1 
  • cUL
  • CSFM
Filler plates and angle brackets specifications
Length12 1/2"
Filler Plates 
Width x HeightPlate no.
1 1/4" x 1/8"4901F
1 1/4" x 1/4"4902F
1 1/4" x 3/8" 4903F
1 1/4" x 1/2"4904F
1 1/4" x 5/8"4905F
3/4"  x 1/2" 4906F
3/4" x 5/8" 4907F
3/4" x 3/4"4908F
Angle brackets 
Width x HeightBracket no.
1" x 1"4901A
1 1/2" x 1" 4902A
1 1/2" x 1 1/2"4903A
1 1/2" x 2" 4904A
1 1/2" x 2 1/2" 4905A

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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