device: 6MU85 merging unit housing type: flush mounting; BI: 119; BO: 55 (27ST + 20F + 8HS + 0P); I: 24 (protection); U: 4 (standard); measuring transducer inputs: 0 (20 m A or 10 V, fast), 0 (20 m A, normal); housing width: 2 x 19"; modules in 19" row 1: IO 202, PS201, IO201, IO203, IO20 3, IO205; modules in 19" row 2: PS 203, IO207, IO209, IO209, IO23 0, CB202; 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,