Tecmark Pressure Switch – Model 3902

The Tecmark Pressure Switch (Model 3902) is a versatile control component used in various spa and hot tub systems where pressure-based sensing is required. It detects changes in water pressure within the circulation or jet system and communicates that signal to the spa control pack, enabling safe operation of pumps and heaters only when proper water flow is present.

This pressure switch is ideal for spas and tubs where Tecmark components are specified or where a pressure-activated safety interlock is needed. Always check your system requirements and confirm compatibility before installation.