ABB DO820 3BSE008514R1 S800 I/O Digital Output Relay 8 ch Product ID:3BSE008514R1 ABB Type Designation:DO820 Catalog Description:DO820 Digital Output Relay 8 ch Long Description:24-230V a.c../d.c. 3A, cos phi>0.4, d.c. 42W. Individually galvanic isolated channels. Use Module Termination Unit TU811, TU813, TU831, TU836, TU837, TU851.