Magnasphere HSS-1451-L2D-010 UL Level 2 High Security Roll-Up Door Contact

The Magnasphere HSS‑1451‑L2D‑010 is a UL 634 Level 2 rated, highly secure, dual‑alarm surface‑mount roll‑up door contact bracket with the HSS L2D high‑security sensor pre‑mounted on the left side. It features one closed‑loop and one open‑loop alarm contact, with a closed‑loop tamper circuit built in, and supports embedded end‑of‑line resistors for enhanced circuit monitoring, ensuring rigorous protection against tampering and magnetic defeat. Installation is simple and requires no adjustment, offering immediate integration into existing systems and compatibility with panels that accept contact inputs. Made in the USA using legacy Mag­nasphere switch technology, it resists permanent contact welding from extreme conditions like lightning, power surges, or stun‑gun attacks. Intrinsically safe by design, the unit is suited for indoor or outdoor applications. The bracket arrangement simplifies mounting, and labor‑saving installation features further reduce total setup time.