Pressure switch; ATEX II 1/2G Ex ia IIB T4 Ga/Gb, II 2G Ex ia IIC T4 Gb, II 2D EX ia IIIB T135°C Db; Change-over contact; Diaphragm NBR; Setting scale; 250VAC/6A; Hose fitting 6,5mm Polyamide; Application: Air, Water, Neutral oils; Range of adjustment 5...20mbar; Overpressure protection 0,5bar; Hysteresis range 3mbar