F4 Series - Stainless Steel. Stainless steel adjustable pressure switches from RS. Available for both hydraulic and pneumatic applications, pressure switches supply an electrical signal once the system has reached a designated pressure. The switching pressure can be adjusted to suit various set points simply by rotating a screw in the centre of the pressure switch. Fitted with a mechanical stop to prevent damage from over pressurisation. Can be mounted in any orientation Accuracy 4% of set pressure Fixed Hysteresis 10-25% (Dependant upon version) DIN 43650 Electrical connection