device: 7SL86 differential/distance protection , 3-pole dual-end fault protection, expandable housing type: flush mounting; BI: 99; BO: 31 (19ST + 12F + 0HS + 0P); I: 8 (protection) + 4 (GIS_LP IT); U: 8 (standard) + 4 (GIS_ LPIT); measuring transducer inputs: 0 (20 m A or 10 V, fast), 0 (20 m A, normal); housing width: 1 x 19'' + 1/2 x 19''; modules in 19" row 1: IO 202, PS201, IO202, IO207, IO20 7, IO230; modules in 19" row 2: PS 203, IO240, CB202; LEDs/push-buttons: 32 LEDs; operation panel: integrated; key switch: without;