device: 6MU85 merging unit housing type: flush mounting; BI: 91; BO: 4 1 (35ST + 6F + 0HS + 0P); I: 4 (protection); U: 12 (standard); measuring transducer inputs: 0 (20 m A or 10 V, fast), 0 (20 m A, normal); housing width: 1 x 19''; modules in 19" row 1: IO 202, PS201, IO205, IO230, IO20 5, IO211; modules in 19" row 2: ; LEDs/push-buttons: 16 LEDs; operation panel: integrated; key switch: without; display type: no display; front design: standard; auxiliary voltage: 60 V - 250 V DC, 100 V - 230 V AC; redundant power supply: no