| Manufacturer | Siemens |
| Category | SIMATIC S7-300 (Legacy Range) |
| SKU / Product code | 6ES7321-1CH20-0AA0 |
| Weight | 0.25 kg |
| Country of origin | DE |
| Commodity code | 85389091 |
| Description | SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED, 16 DI, DC 48-125V, 1 X 20 PIN |
