Siemens 6GK5 204 PLC I/O Module 24 V dc, 125 x 60 x 124 mm. Number of I/O: 7. Length: 125mm. Width: 60mm. Depth: 124mm. Minimum Operating Temperature: -40°C. Maximum Operating Temperature: +70°C. MPN: 6GK5204-0BA00-2BA3