⚡ Control Pressure Like a Pro — Precision Meets Power!
The Tecmark Pressure Switch 3903-DF is a compact, field-adjustable SPST switch rated for 1 amp, featuring a 1/8" MPT fitting. Designed for precise pressure control in professional applications, it offers reliable switching performance and customizable settings to fit diverse system requirements.
F**S
Spa Heats Again
My friend changed out the heater element which was bad but the spa didn't heat. Bought this and after he installed it the heat led was on and the hot tub came up to temperature.
G**N
Great price
I got a used hottub for free that had a no heat issue. I purchased this with a heater coil, and a relay for the printed circuit board. It did the trick, hottub heats up perfectly and it cost less then $100 for all 3 items.
C**H
Great
Great price fast delivery thanks
