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  • Seco-Larm Enforcer Magnetic Contact, 3/8" Rare-Earth Recessed, 1/2" Gap, NC

Seco-Larm Enforcer Magnetic Contact, 3/8" Rare-Earth Recessed, 1/2" Gap, NC


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WARNING: Cancer and Reproductive Harm –


Recessed Magnetic Contact Watches A Door & Window

Monitor a single door or window on your property with the Seco-Larm 3/8" Rare-Earth Recessed-Mount Magnetic Contact Switch. This recessed magnetic contact sensor fits into the frame of a door or window and sends alerts when the sensor and contact are separated. Made out of high-impact ABS plastic, the switch and magnet is designed for closed loop circuits and has an operation gap of half an inch. The contact reed switch is SPST and gold plated, resulting in higher handling power and longer performance.

  • Recessed sensor mounting to frames of doors and windows
  • 1/2 inch operation gap ensures seamless installation
  • Strong, durable construction with long-lasting performance


  • Sensor
  • Manual

Seco-Larm Security Products

So many places and things to protect; so many ways to protect them; one partner: Seco-Larm. Under the Enforcer trademark, Home Controls offers an impressive line of Seco-Larm security products, ranging from simple switches to some of the most sophisticated alarm devices. Whether for physical security, CCTV, access control, RF equipment, or vehicle security, Seco-Larm is the premier choice. Seco-Larm gives its customers such an extensive range of dependable, cost-effective security products with a full program of service and support.


  • Manufacturer Part #: SM-4103-TQ/W
  • Loop Type: Closed loop
  • Electrical Configuration: N.O. (SPST)
  • Operation Gap: 1/2" (13mm)
  • Connectors: Gold-plated screw terminals
  • Color: White
  • Material:
    • Case: High-impact ABS plastic
    • Contacts: Ruthenium on gold underplating
  • Contact Rating:
    • 0.1A@100VDC (max.)
    • 1.0A@10VDC (max.)
    • 10W (max.)
  • Operating Temperature: -15° to 160° F (-25° to 70° C)
  • Switch Cycles: 50 Million (0.1mA@5VDC)
  • Switch Dimensions: 15/16" L x 7/16" Dia (24 L x 11 Dia mm)
  • Magnet: Rare-earth neodymium alloy
  • Warranty: Lifetime Limited