503SA

Support 3 modules for box item 503E, item 503AP - for cover plates item 503/1A/.., item 503/2A/.., item 503/3A/.., AM4803.., AM4803M1
Support 3 modules for box item 503E, item 503AP - for cover plates item 503/1A/.., item 503/2A/.., item 503/3A/.., AM4803.., AM4803M1