Product Attributes
| Categories | Automation & Control – SIMATIC Digital Input Module |
| Manufacturer | Siemens |
| Series | S7-400 |
| Part Status | Active |
| Model | 6ES7 421-1FH20-0AA0 |
| Product type | SM 421 Digital Input Module |
| Number of Inputs | 16 |
| Input Type | Digital |
| Type of Input Voltage | AC/DC |
| Resolution | – |
| Number of Output | – |
| Output Type | – |
| Expandable FEPROM | – |
| Work Memory (RAM) | – |
| Battery | – |
| 1st Interface | – |
| 2nd Interface | – |
| Operating Temperature | 0°C……+60°C |
| Mounting type | – |
| Output Current | – |
| Firmware version | – |
| Weight | 650g |
| Dimensions WxHxD, mm | 25 x 290 x 210 |
