Siemens Digital I/O Module SIMATIC S7-400 Digital 24V
- RS Stock No.:
- 226-3995
- Mfr. Part No.:
- 6ES7421-7DH00-0AB0
- Brand:
- Siemens
Subtotal (1 unit)*
£839.31
(exc. VAT)
£1,007.17
(inc. VAT)
FREE delivery for orders over £50.00
Stocked by manufacturer
- Ready to ship from 20 April 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £839.31 |
*price indicative
- RS Stock No.:
- 226-3995
- Mfr. Part No.:
- 6ES7421-7DH00-0AB0
- Brand:
- Siemens
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Product Type | Digital I/O Module | |
| Module Type | Digital I/O Module | |
| Input Type | Digital | |
| Maximum Supply Voltage | 24V | |
| Number of I/Os | 16 | |
| Length | 290mm | |
| Series | SIMATIC S7-400 | |
| Width | 25mm | |
| Standards/Approvals | RoHS | |
| Depth | 210mm | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Product Type Digital I/O Module | ||
Module Type Digital I/O Module | ||
Input Type Digital | ||
Maximum Supply Voltage 24V | ||
Number of I/Os 16 | ||
Length 290mm | ||
Series SIMATIC S7-400 | ||
Width 25mm | ||
Standards/Approvals RoHS | ||
Depth 210mm | ||
- COO (Country of Origin):
- DE
The Siemens SIMATIC S7-400 series digital input SM 421 has 16 digital input. It has 24 to 60V input voltage and 150mA current.
Input current 150mA
Number of digital inputs 16
Type of input voltage AC/DC
Isolation tested with 1500 V AC
Related links
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- Siemens SIMATIC S7-400 Series Series Analogue Output Module for Use with SIMATIC S7-400
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