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 FKM; Setting scale; 24VDC/100mA; Male thread 1/4"; Stainless steel; Range of adjustment 1...6bar; Overpressure protection 25bar; Hysteresis range 0,5...2bar