Potter OSYSU-2 OSYSU Series Outside Screw and Yoke Valve Supervisory Switch (Double Switch)

Ensure continuous, code-compliant supervision of water-flow valves with the Potter Electric Signal, LLC OSYSU-2 outside screw and yoke valve supervisory switch. Designed for demanding fire protection and security applications, this double-switch unit delivers redundant monitoring via two SPDT (Form C) contacts so you can separately supervise alarm and supervisory circuits or tie into multiple control panels. Built to perform outdoors or indoors, the OSYSU-2 features NEMA 4X and 6P (IP65/IP67) protection and a wide -40°F to 140°F operating range for dependable operation in harsh environments. Its mounting design fits most OS&Y valves from 2" to 12" (and some smaller valves), reducing installation complexity across facilities. The tamper-resistant cover and included special tool enhance physical security and authorized access control, while visual indicators and dual conduit entries lower troubleshooting time and accelerate integration with fire alarm, security and building automation systems. Ideal for water-flow monitoring, valve supervision and life-safety packages—specify the OSYSU-2 for robust, easy-to-install valve monitoring. Contact us to add the OSYSU-2 to your next protection or surveillance project.

• Weatherproof, NEMA 4X/6P construction ensures reliable outdoor and indoor valve supervision even in harsh conditions
• Dual SPDT (Form C) contacts provide independent circuits for separate monitoring, alarm and supervisory functions
• Broad compatibility mounts to most OS&Y valves 2"–12" (and some as small as ½") for versatile field deployment
• Tamper-resistant cover with supplied removal tool improves system security and simplifies authorized maintenance
• Visual switch indicators and dual conduit entries speed commissioning, diagnostics and integration with fire, security and building monitoring systems