The Tecmark 3903-BP Pressure Switch is a single-pole, single-throw (SPST) sensor designed for spa and hot tub systems that require precise pressure monitoring between 1-5 PSI. This OEM-quality switch features a 3-amp rating with standard 1/8" NPT threading, making it compatible with most residential spa control systems. The switch activates heating elements, pumps, or other components when proper water pressure is detected, preventing dry-fire conditions and equipment damage.
Built to Tecmark's exacting standards, this pressure switch delivers reliable performance in demanding spa environments. At Bubbles Supply, we guarantee an exact fit for your application and back every switch with our comprehensive 1-year warranty. Most orders ship the same day for minimal downtime. Professional installation recommended – verify your existing switch specifications and ensure proper electrical connections before installing this pressure-sensitive component.