Functions: Extension module for the MSI 400 configurable safety control, Extension with 8 safe inputs and 4 safe outputs (OSSDs); SIL: 3, IEC 61508; Performance Level (PL): e, EN ISO 13849-1; Category: 4, EN ISO 13849; Number of outputs: 4 Piece(s); Number of inputs: 8 Piece(s); Connection: Screw terminal; Dimension: 22.5 mm x 96.5 mm x 120.8 mm; Certifications: c UL US, TÜV Rheinland