Resideo 958 Overhead Door Magnetic Contact Sensor, SPST Switch, Form A

Protect entry points and maintain reliable intrusion monitoring with the Resideo 958 Overhead Door Magnetic Contact Sensor. Built for commercial security and access control applications, this magnetic contact sensor delivers consistent door-open/door-closed reporting to alarm panels and monitoring systems thanks to its SPST reed switch and wired connectivity.

The 958 is engineered for real-world conditions: epoxy-sealed construction shields components from moisture and impact, while the rugged "Shock Absorber" design protects the reed from flex and housing damage to reduce maintenance and false alarms. Surface-mount installation with a 2' cable and a standard 2-3/8" (60 mm) gap speeds up retrofits and new installs on overhead doors, loading bays, and exterior entrances. Rated to operate down to -40°F, it performs in harsh environments where surveillance and security cannot be compromised.

Compatible with common control panels and replacing legacy models like SM-226LQ and SM-4601-LQ, the Resideo 958 offers a practical, durable solution for intrusion detection, monitoring and access control. Add the 958 to your security system to improve reliability—order now for dependable commercial door protection.

• Delivers dependable intrusion monitoring for commercial overhead doors and access control points with a reliable SPST reed switch
• Epoxy-sealed, impact-resistant housing protects electronics from moisture and job-site abuse for long-term uptime
• Rugged "Shock Absorber" design reduces reed stress and minimizes false alarms from vibration or door movement
• Surface-mount design with 2' cable and a standard 2-3/8" (60 mm) gap simplifies retrofit and new installations
• Rated to -40°F for cold-climate performance at loading docks, warehouses and outdoor entrances
• Backed by a 2-year limited warranty and direct compatibility with legacy models (SM-226LQ, SM-4601-LQ) for easy replacement