SIPLUS S7-300 SM 326F DI8 NAMUR for medial exposure with conformal coating based on 6ES7326-1RF01-0AB0 . Digital input 'SM 326, 8 DI DC 24V, NAMUR,' fail-safe NAMUR input for SIMATIC S7 F-systems, up to category 4 (EN 954-1) / SIL3 (IEC 61508) /PLE (ISO 13849), 1x 40-pin SIPLUS S7-300 SM 326F DI8 NAMUR for medial exposure with conformal coating based on 6ES7326-1RF01-0AB0, Digital input 'SM 326, 8 DI, DC 24V, NAMUR,' fail-safe NAMUR input for SIMATIC S7 F-systems, up to category 4 (EN 954-1) / SIL3 (IEC 61508) /PLE (ISO 13849), 1x 40-pin SIPLUS S7-300 Digital module input SM 326, F-DI 8xDC 24 V NAMUR with conformal coating based on 6ES7326-1RF01-0AB0