This sensor finally fixed the fault that was being registered on the panel after the tub heated up and then when you try to turn on the pump, it would send a fault and shut down the system.

Worked with no problems

The switch is installed at same level as the water surface
I did set it to minimal pressure and it properly disconnect when pump doesn’t run. I should move dial to higher pressure to ensure that the heater doesn’t start without the pump ON. It works fine as it is now for 5weeks

Everything was as promised. Part worked as advertised.

All I can say is that I needed a pressure switch for my hot tub and went online and googled it and your name came up and the switch was a good price and I ordered it and it was delivered in record time. I will use Spa Depot if I need any more parts.