Review on MERRILL MPSHD4060 Pressure Switch - 40 to 60 PSI: A Reliable Solution for Efficient Pressure Control by Bobby Posner

Seems to be much better made than what I've bought from places like Lowe's or Home Depot. I love that it comes with the correct metric size Allen key. And it features professional-grade clamps that you can insert wires into and tighten hex screws to hold them, not just screws that you have to screw into a tight spot to secure. I first bought it as a backup because my fountain seemed to run through them fairly regularly and when the old switch failed due to a reservoir failure I installed this. After seeing the quality when I installed this one I ordered another one as a backup as I live in a very rural area and wanted to have it on hand.