Description
S7-400 AC digital input module. 16 inputs 120 or 230VAC. For legacy AC wired systems.
SM 421-1 16x DI 120/230VAC
16-channel DI 120/230VAC for S7-400
Additional information
| Brand | Siemens |
|---|---|
| Automation Category | Advanced PLCs |
| Series | S7-400 (Legacy) |
| Product Type | Signal Module – DI |
| Part Number | 6ES7421-1FH20-0AA0 |
