The 0E-SRFMTOD2W 2-Wire Surface-Mount Magnetic Contact is a robust and high-performance solution engineered to secure overhead doors in both commercial and residential security systems. Built with a Single-Pole Single-Throw (SPST) configuration supporting a Normally Open (N.O.) contact in a closed loop circuit, this device delivers dependable operation and precise door position monitoring. Featuring a 2.65" (67 mm) standard closed gap, it offers compatibility with most overhead doors while maintaining reliable magnetic alignment for consistent detection. The contact is constructed from heavy-duty extruded aluminum for superior impact resistance and long-term durability, and the adjustable mounting bracket ensures secure and accurate installation. Equipped with 24" (61 cm) armored wire leads, the unit resists tampering and physical damage in demanding environments. With an IP66-rated housing, it is fully dust-tight and protected against high-pressure water jets, making it suitable for both indoor and outdoor applications. High-grade neodymium magnets and nickel components ensure strong, stable magnetic performance and corrosion resistance. Backed by a 1-year limited warranty, this magnetic contact is a reliable choice for overhead door security in warehouses, garages, loading bays, and industrial facilities.