Pressure switch Series 903.1; Change-over contact; Diaphragm NBR; Setting scale; 250VAC/6A; 24VDC/2A; Male thread 1/4"; Application: Air, Water, Neutral oils; Protection class See Protection cap (Max. IP65); ; Pressure setting 3,0+-0,3/1,0+-0,3 mbar; Overpressure protection 0,3bar; Hysteresis range 0,3mbar