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  • Seco-Larm Enforcer Magnetic Contact, 3/8" Rare-Earth Recessed, 1/2" Gap, With 18-Inch Wired Leads

Seco-Larm Enforcer Magnetic Contact, 3/8" Rare-Earth Recessed, 1/2" Gap, With 18-Inch Wired Leads


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WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov


Recessed Magnetic Contact Monitors A Door Or Window

Monitor a single sliding 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 sliding door or window and sends alerts when the sensor and contact are separated. Made out of high-impact ABS plastic, the switch and magnet have 18-inch wire leads, are designed for closed-loop circuits, and provide an operation gap of half an inch. The contact reed switch is SPST and ruthenium on gold underplating, resulting in higher handling power and longer performance.

  • Adds security to sliding doors and windows where there's limited space
  • Contact reed switch is SPST with 18-inch wire leads
  • 1/2 inch operation gap ensures seamless installation
  • Designed for closed loop circuits
  • Made with ruthenium on gold underplating for a longer expected life


  • Magnetic Contact
  • 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-LQ/W
  • Loop Type: Closed Loop
  • Electrical Configuration: N.O. (SPST)
  • Operation Gap: 1/2" (13mm)
  • Connectors: 18" (46cm) Leads
  • Color: White
  • Material:
    • Case: High-impact ABS plastic
    • Contacts: Ruthenium on gold underplating
  • Contact Rating:
    • 1.0A@10VDC (max.)
    • 10W (max.)
  • Operating Temperature: -15° to 160° F (-25° to 70° C)
  • Switch Cycles: 50 Million (0.1mA@5VDC)
  • Dimensions: 9/16" x 7/16" (14 x 11 mm)
  • Magnet: Rare-earth neodymium alloy
  • Credentials: UL, RoHS
  • Warranty: Lifetime limited