Sirius 3RK3 Series Safety Controller, 8 Safety Inputs, 2 Safety Outputs, 24 V dc. SIL: SIL 3. IP Rating: IP20. Dimensions: 113 x 45 x 124 mm. Depth: 124mm. Width: 45mm. Length: 113mm. MPN: 3RK3111-1AA10, Siemens