Further information for Pepperl + Fuchs PF Interface module 124422 - VAA-4E4A-KE-ZE/R
KE control cabinet module, 4 inputs (PNP) and 4 relay outputs, AS-Interface specification: V2.1, voltage: 21 ... 31 V DC (INT), protection class: IP20, protection class: EN 60529:2000, mounting: top hat rail