Seco-Larm SM-206Q/W Recessed Magnetic Door Sensor N.C (Pack of 5)

The Seco-Larm SM-206Q/W is a recessed-mount magnetic contact designed for professional life-safety and security installations. Its quarter-inch recessed form factor allows for discreet, flush integration into doors, windows, or frames, keeping the sensing element out of sight while maintaining reliable perimeter detection. As a normally-closed (N.C.) magnetic contact, it is engineered to trigger an alarm condition upon separation of the magnet from the switch body, a circuit-state convention that is standard in commercial intrusion detection systems and compatible with the vast majority of professional alarm control panels. Built under the Seco-Larm brand, a recognized name in commercial security hardware, the SM-206Q/W suits contractors and integrators working on commercial, institutional, and high-end residential projects where clean aesthetics and dependable contact sensing are required.

Key features & benefits

• Recessed Quarter-Inch Mount — The compact recessed form factor allows the switch body to be mortised flush into a door or frame, eliminating exposed hardware and delivering a clean, professional finish on any installation.
• Normally-Closed (N.C.) Circuit — The N.C. configuration is the industry-standard convention for intrusion detection, ensuring that a cut wire, power loss, or magnet separation all result in an alarm condition, providing inherent tamper resistance by design.
• Magnetic Actuation — Contactless magnetic operation means no mechanical wear between the switch and its actuating magnet, contributing to long service life in high-cycle applications such as frequently used entry doors.
• Professional-Grade Security Component — Sourced from Seco-Larm, a manufacturer with an established presence in the commercial security market, the SM-206Q/W is suited for contractor and integrator use in commercial and institutional security projects.