Siemens SIMATIC S7-300 Series PLC I/O Module 16 Outputs 4 A 20.4 → 28.8 V dc, 125 x 40 x 120 mm. Output Type: Digital. Length: 125mm. Width: 40mm. Depth: 120mm. Maximum Operating Temperature: +60°C. Minimum Operating Temperature: -25°C. Supply Voltage: 24 V. MPN: 6ES7322-1BH01-0AA0