device: 6MU85 merging unit housing type: flush mounting; BI: 183; BO: 33 (27ST + 6F + 0HS + 0P); I: 4 (protection); U: 4 (standard); measuring transducer inputs: 0 (20 m A or 10 V, fast), 16 (20 mA, normal); housing width: 1 x 19'' + 1/2 x 19''; modules in 19" row 1: IO 202, PS201, IO205, IO207, IO23 0, IO230; modules in 19" row 2: PS 203, IO230, 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,