Further information for Pepperl + Fuchs PF Interface safety module 203796 - VBA-4E1A-KE3-ZEJ/SR
KE3 control cabinet module, 4 inputs, 1 safety-related relay output, AS-Interface specification: V2.1, voltage: 21 ... 31 V DC, protection class: IP20, protection class: EN 60529:2000, mounting: top hat rail