Safety chain VII.02Components up to 2013/04 VII.02Unit 112 up to 2013/04 VII.04Units 211, 311 up to 2013/04 VII.05Components from 2013/05 VII.06Unit 112 from 2013/05 VII.08Unit 112T from 2013/12 VII.09Unit 112L from 2015/09 VII.10Units 211, 311 from 2013/05 VII.11Low voltage VII.12Power supply to the electronics VII.12Power supply to the cylinders VII.13Power supply moduleChapter Page