Siemens Digital I/O Module SM 1221 Digital 24V dc
- RS Stock No.:
- 746-6564
- Mfr. Part No.:
- 6ES7321-7BH01-0AB0
- Brand:
- Siemens
Subtotal (1 unit)*
$1,533.84
(exc. GST)
$1,687.22
(inc. GST)
FREE delivery for orders over $60.00 ex GST
Temporarily out of stock
- 1 unit(s) shipping from 12 March 2026
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Units | Per unit |
|---|---|
| 1 + | $1,533.84 |
*price indicative
- RS Stock No.:
- 746-6564
- Mfr. Part No.:
- 6ES7321-7BH01-0AB0
- Brand:
- Siemens
Specifications
Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Module Type | Digital I/O Module | |
| Product Type | Digital I/O Module | |
| Input Type | Digital | |
| Maximum Supply Voltage | 24V dc | |
| Number of I/Os | 16 | |
| Standards/Approvals | No | |
| Depth | 120mm | |
| Length | 125mm | |
| Width | 40 mm | |
| Series | SM 1221 | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Module Type Digital I/O Module | ||
Product Type Digital I/O Module | ||
Input Type Digital | ||
Maximum Supply Voltage 24V dc | ||
Number of I/Os 16 | ||
Standards/Approvals No | ||
Depth 120mm | ||
Length 125mm | ||
Width 40 mm | ||
Series SM 1221 | ||
- COO (Country of Origin):
- DE
Siemens Input Module, 16 x Digital Inputs, 24V DC Voltage Supply - SIMATIC Series - 6ES7321-7BH01-0AB0
Want to streamline the setup of your automated factory, data acquisition and medical imaging applications? With its 16 inputs, this Siemens digital input module minimises clutter and makes the most of available space. Link the unit to switches and proximity sensors to deliver reliable messages to your S7-300 PLC. Thanks to the channel-granular wire-break function, you can conveniently pinpoint problems when they crop up, for quick maintenance and minimal downtime. Galvanic isolation between the channels and the backplane bus boosts electrical safety and prevents damage. Programmable delays and diagnostics let you customise the module for your system.
Features & Benefits
• Performs without a glitch in temperatures up to +60°C when fixed in a horizontal position
• 24V DC supply voltage for use with standard power supplies
• Light weight of 200g adds minimal strain to your system
Will this input module warn me of problems?
Yes, it has integrated LED status indicators and an alarm that sounds when something goes wrong.
How big is this input module?
It's a small unit, measuring only 40 (W) x 125 (H) x 120mm (D). This makes it an easy fit in limited spaces.
Related links
- Siemens SM 1221 Series Digital Output Module for Use with S7-300 Series 230 V
- Siemens SM 1221 Series PLC I/O Module for Use with SIMATIC S7-1200 Series, Digital
- Siemens SIMATIC S7-400 Series Series Digital I/O Module for Use with SIMATIC S7-400
- Siemens SM 1222 Series Digital I/O Module for Use with S7-300 Series Digital, 24 V
- Siemens SM 323 Series Digital I/O Module for Use with S7-300 Series Digital, 24 V
- Siemens SIMATIC ET 200S Series Digital I/O Module 24 V
- Siemens SIMATIC S7-300 Series Series Digital Input Expansion Module for Use with SIMATIC S7-300 Series 24 V
- Siemens SM 1223 Series PLC I/O Module for Use with SIMATIC S7-1200 Series Digital, 24 V