1,200-lb Electromagnetic Lock, Status LED, Bond sensor, Door Position Sensor, UL Listed

The E-941Sx series of electromagnetic locks is the ideal way to secure a door against unauthorized entry. When power is applied to the electromagnetic lock, it creates an extremely strong magnetic field. The electromagnet is strongly attracted to the steel armature plate which is mounted on the secured door. Once the electromagnet is deactivated, the secured door will function normally without any residual magnetism.

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  • 1,200-lb (545kg) Holding force
  • No residual magnetism
  • MOV Surge protection
  • Built-in status LED shows locked/unlocked status
  • Built-in bond sensor with 3A@12VDC dry relay output for monitoring door status
  • Built-in door position sensor with 0.2A@12VDC reed switch for monitoring door-closed status
  • Anodized aluminum housing (US 28)
  • Adjustable mounting bracket
  • Complete mounting hardware for typical installations
  • Additional brackets available for easy mounting or atypical situations
  • Detachable faceplate for easy access to wiring
  • 12/24VDC Selectable
  • Multiple UL listings
        • UL294 Access Control System Units – USA
        • UL10C Positive Pressure Fire Test – USA
        • UL10B Fire Test of Door Assemblies – USA
        • ULC-S104 Fire Test of Door Assemblies – Canada
  • Lifetime limited warranty*

*Warranty applies in the USA and Canada only. Contact SECO­-LARM for details.

NOTE: If U- or Z-bracket is used, built-in door position sensor will not work.

Holding force 1,200-lb
Operating voltage 12 /24 VDC (selectable)
Current draw 12VDC: 500mA 24VDC: 270mA
Bond sensor SPDT relay, 3A@12VDC
Door position sensor Reed switch, 0.2A@12VDC
Operating temperature 32°~120°F (0°~49°C)
Dimensions – Magnet 10-1/2″x2-5/8″x1-9/16″ (267x67x40 mm)
Dimensions – Armature 7-1/4″x2-3/8″x5/8″ (185x61x16 mm)
Destructive attack Level 1
Line security Level 1
Standby power Level 1
Endurance Level IV

Product Information Sheet (PI)


Mounting Template


  1. The electromagnet is fitted with a metal oxide varistor to prevent interference, so do not install a second diode.
  2. Ensure that the control device is connected between the power source and the positive terminal of the lock
  1. Make sure the electromagnet and armature plate are properly aligned.
  2. Make sure the contact surfaces of the electromagnet and armature plate are clean and free from rust.
  3. Check the power leads with a meter, and make sure 12VDC or 24VDC ispresent.
  4. Make sure the rubber washer is installed and free from damage.
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