The Tecmark pressure switch is very common in the UK market, being used on Gecko, Spa Builders, Hydroquip and Balboa systems

The unit is very easy to fit, but be aware when refitting it is advisable to drain the spa to prevent water damage through spraying onto the circuit board as this pressure switch is normally found inside the control pack.

It has a PSI gauge on the side but we do not (usually) recommend adjusting this, however if you decide to then do it gradually.