The pressure switch is used in my garden and to the pressure, the control a pump, pumping water out of a 4m deep wells in a 200 liter tank, with regard to a constant pressure. The controller is built relatively cheaply. The base plate is made of metal, the rest around plastic. But the price was also super cheap. The regulator does the job and can be very easily adjusted. The differential pressure screw I have completely dissolved, thus to reach a difference of 1 bar betw. Min and Max. The Max-screw I have set a bar for me on 4. Schön would be a more accurate setting, but is well mechanically in this price range can not be realized. Thus my bar pump starts up at 3 and switches off again at 4 bar. If that's enough I can recommend this pressure switch.
