Product DescriptionThe Seco Larm SM 226L 3Q magnetic contact is a heavy duty overhead door sensor designed for reliable protection in commercial and industrial applications. It features a wide 2.75 inch sensing gap that allows accurate detection even on large or uneven door surfaces. The contact supports both open and closed loop wiring through its three wire configuration, providing flexibility for different alarm systems. Built with a rugged cast aluminum switch housing and a durable ABS magnet enclosure, it offers long lasting performance and resistance to impact and environmental factors. The unit is sealed for moisture protection, making it suitable for warehouses, garages, and loading dock areas. With its simple installation and dependable operation, the Seco Larm SM 226L 3Q ensures precise door monitoring and professional level security integration.