I/O expansion, Supply voltage: 24 V DC, Can be used via easyConnect, 4, Mounting position: Vertical or horizontal, Protection type (IEC/EN 60529, EN50178, VBG 4): IP20, Standards: EN 61000-6-2, EN 61000-6-3, IEC 60068-2-6, IEC 60068-2-27, IEC 60068-2-30, IEC 61131-2, EN 61010, EN 50178, cULus per UL 61010, CSA C22.2 No.61010