varioface module, with screw connection and flat-ribbon cable connector, for mounting on ns 35 rails, with pin strip and short and long locking latches for socket strips, 20-pos., with led
coupling relay for sil 3 high- and low-demand applications, couples digital output signals to the i/o, 1 enabling current path, 1 digital signal output, safe state off applications, test pulse filter, fixed screw terminal block