Safe Signal Sprinkler OSY2 Supervisory Switch 30067439-890 and FC4B models manufactured prior

and FC4B models manufactured prior to 1994

allowing technicians to dial in precise cut-in and cut-out setpoints via the large

This timer is specifically designed for Reznor HVAC equipment

The coil (terminals 2 and 5) should show high resistance

With a setpoint range of

Safe Signal Sprinkler OSY2 Supervisory Switch 30067439-890 and FC4B models manufactured priorThe Safe Signal OSY2 Supervisory Switch is engineered for high reliability monitoring of Outside Screw and Yoke (OS&Y) gate valves within fire protection systems. This dual SPDT contact switch ensures precise signaling if the valve is moved from the fully open position, facilitating seamless integration with fire alarm control panels or local notification devices. The NEMA 3R rated enclosure features a rugged, weather resistant design with a