Locknetics by Schlage M452 / M452P Series Double Electromagnetic Lock

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Locknetics by Schlage M452 / M452P Series Double Electromagnetic Lock

M400 Series electromagnetic locks from Schlage are designed with the customer in mind to be robust, easy-to-install, and secure. The unique bayonet mounting feature makes installation easier, allowing the installer to have their hands free during the mounting process. All M400 Series electromagnetic locks are symmetrical with field-selectable handing, allowing optimum placement of the magnet, no matter the application. They are designed to provide automatic voltage sensing for 12 and 24 volts along with polarity protection to make wiring less complex. M450 models are tested and certified to meet or exceed UL 1034 and BHMA 1000 lb hold force requirements. The M450 electromagnetic locks come in four configurations to meet your specific security needs. Single and double door models are offered in standard configurations. Plus versions of these models with “P” designations add intelligent sensing and reporting features needed to integrate with access control systems along with additional available options.

Features and benefits 

  • 1000 lb. hold force rating for high security applications 
  • “Plus” models offer magnetic bond sensor (MBS), adjustable relock time delay (RTD) and door position switch (DPS) 
  • Automatic voltage selection (AVS)
  • Symmetrical design with field-selectable handing for optimum placement 
  • Bayonet mount simplifies installation by eliminating the need to hold lock overhead while securing 
  • Armature mount pivot feature compensates for slight opening imperfections 
  • Limited lifetime warranty on magnetic coil assembly

Additional features

All models

Automatic Voltage Selection (AVS) senses the voltage applied to the lock and responds accordingly


  • Magnetic Bond Sensor (MBS) monitors the strength of the bond between the lock and armature so you know the door is secure 
  • Door Position Switch (DPS) monitors whether the door is open or closed 
  • Relock Time Delay (RTD) provides a relock delay that is adjustable from 0.5 to 30 seconds 

Available Finish: Aluminum painted


Product How to Choose
M400 Series M490: Tested and certified to meet or exceed UL1034 and BHMA 1500 lb. hold force requirements.  
M450: Tested and certified to meet or exceed UL1034 and BHMA 1000 lb. hold force requirements
M420:  Tested and certified to meet or exceed UL1034 and BHMA 500 lb. hold force requirements. 

pdficon.png Standard Installation Template

pdficon.pngM400-Series Double Lock Installation Instructions