Field of application in acc. with EN 1854. For gas, air and fumes. Switching ranges from 0.4 to 500 mbar, see table specifications. The pressure switches DG can also be used as special-design pressure switches as defined by VdTÜV Code of Practice “Druck 100/1” (Pressure 100/1) for applications in gas fired installations for steam and hot water generators in acc. with TRD 604.