Pressure Switch Pev-1/4-A-Sw27 Opens or Closes An Electrical Circuit When a Certain Pressure Value Is Reached. Adjustable Pressure Switching Point. Ce Mark (See Declaration of Conformity) =To Eu Directive Low-Voltage Devices, Measured Variable=Relative Pressure, Measurement Method=Pneu./Elect. Pressure Transducer, Pressure Measuring Range=1 - 10 bar, Operating Pressure=1 - 10 bar, Festo