Pepperl+Fuchs Switch Amplifier, KFD2-SR2-EX1.W.LB, KFD2-STC4-EX1, KFD2-STC4-EX2, KFD2-SR2-EX1.W, KFD2-SR2-EX2.W, KCD2-STC-EX1, KFD2-UT2-EX1, KFD2-UT2-EX2, KCD2-UT2-EX1, KFU8-UFC-EX1.D, KFU8-UFC-1.D, KFD2-DWB-EX.1D, KFD2-VR4-EX1.26, KFD2-SL2-EX1.B, KFD2-SL2-EX2.B, KFD2-EB2.R4A.B, KFD2-SCD2-EX2.LK, KFD2-UFC-EX1.D, KFD2-CD-EX1.32, KFD2-ST2-EX2