| Safety Control Units Category 4 as per EN 954-1 Control Unit SG-SUE 41X4 NA............................................................. 4.1.1 Safety Control Units Category 3 as per EN 954-1 Control Units SG-EFS and SG-SLE...................................................... 4.2.1 Control Units Category 2 as per EN 954-1 Control Unit SG-RED ............................................................................ 4.3.1 Control Units Category 1 as per EN 954-1 Control Units SG-RS............................................................................. 4.4.1 |