Have bought 3 years ago the pressure switch; Connection and installation were problems, the pressure switch worked a garden season without difficulty. However, the switch turned occasionally suddenly the pump. I had initially been postponed hose leaks. Before mothballing about winter, I then examined the switch accurately and realized that the housing half was almost filled with the electronics below the 230V connections with water. Thus, it was of course corrosion on the board and leakage. Hab then dried everything, cleaned and reassembled. This happened to me not that again (I thought, of course, the water has pushed in from the outside) I have provided the pressure switch pump together with a hood as rain protection next year. After about 1/2 year came back to the effect that the pump turned on suddenly without water withdrawal. Again, the case was full of water. This time, it was clear the water does not come from the outside, but is purely somewhere down inside. This time I had to replace 2 resistors and the board was so corroded that interconnects needed to be repaired, but then the pump was running again. My additional sealing of cable entries, also from the 2nd half of the housing has, however, not helped, I have now drilled into Geäuse holes, so the water can flow off again. As far as the supply is functioning again, a total of me is but too insecure, I switch the pump now in disuse always completely out, so I'm going to now order a new pressure switch. I'm trying it right now with a cheaper model, the more high-priced switch was money well spent in any case not worth it!
