SMC IS1000-01 Air and Inert Gas Pressure Switch Pressure Monitoring The SMC IS1000-01 pressure switch monitors air and inert gas pressure in pneumatic systems. Its OFF-point setting range is 0.1–0.4 MPa. The unit weighs 74 g and uses an R 1/8 port. Technical Specifications Parameter Specification Brand SMC Model IS1000-01 Fluid Air / inert gas Maximum operating pressure 0.7 MPa Proof pressure 1.0 MPa Pressure setting range at OFF point 0.1–0.4 MPa Hysteresis 0.08 MPa or less