2505A-L Industrial aluminium surface mount with steel armored cable Industrial Contact The Sentrol 2500 series are designed to be installed in commercial and industrial environments where a rugged sealed unit is required. It is ideal for metal doors, overhead doors, fences and gates. Each model features a high strength extruded aluminum housing and is completely encapsulated in Sentrol's exclusive polyurethane potting compound. Durability and dependability The Sentrol high performance magnetic contacts have been designed to facilitate installation and ensure durability and dependability. Most are conservatively rated at 10,000,000 cycles, guaranteeing a long life. Every reed connection is hand soldered and each magnetic contact is tested before they leave the factory, 100% of the time. High quality components and materials Reed legs are plated with rhodium or ruthenium, and hermetically sealed in dry nitrogen. This offers superior protection against sticking and provides a moisture free environment therefore preventing corrosion. Standard Features Mounting brackets available for gates, garage door and freezers E E Rugged construction for a longer life E Convenient surface mounting 2507AH series is polarity-sensitive with reference to magnet direction