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Siemens 6ES7221-1BH32-0XB0

Siemens S7-1200 Digital Input Module 16DI 24VDC

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Siemens 6ES7221-1BH32-0XB0 S7-1200 Digital Input Module 16DI 24VDC — PLC Modules & Extensions
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Product Description

RoHS CompliantLifecycle Status:

The Siemens S7-1200 Digital Input Module (SM 1221) is designed to enhance the functionality of your S7-1200 PLC system. This module provides 16 digital inputs with a 24V DC sink/source configuration, making it ideal for a wide range of industrial automation applications. It ensures precise and reliable signal processing, conforming to IEC 61131 Type 1 standards.

With a compact design, the SM 1221 module features a robust plastic enclosure, ensuring durability and protection with an IP20 rating. The module supports a wide operating temperature range from -20°C to 60°C, making it suitable for various industrial environments. Additionally, it offers diagnostic capabilities with LED indicators for input status, ensuring easy monitoring and maintenance.

The module is equipped with potential separation between channels in groups of four, enhancing safety and reliability. It supports a maximum cable length of 500 meters for shielded cables and 300 meters for unshielded cables, providing flexibility in installation. The input delay is parameterizable, allowing customization to meet specific application requirements.

Compliant with international standards, the SM 1221 module holds approvals from CE, CSA, UL, cULus, FM, RCM, KC, and Marine. It also meets the ecological footprint requirements with an environmental product declaration and global warming potential metrics.

Applications: This digital input module is perfect for use in manufacturing, process control, and other industrial...

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Offer details

Best offer from:
Trusted supplier — Poland, member since 2021, 5–9 employees
Availability:
1 pc.
In-Stock
Updated at: 24-08-2026
Warranty:
12 months
Condition:
New Factory Sealed
New Factory Sealed - A brand-new, unused, unopened, undamaged item in its original manufacturer-sealed packaging.
The Seller is responsible for shipping the product and invoicing

Specifications

Brand
Siemens
Rated value (DC)
24 V
Permissible range, lower limit (DC)
20.4 V
Permissible range, upper limit (DC)
28.8 V
From backplane bus 5 V DC, max.
130 mA
From load voltage L+ (without load), max.
4 mA per channel
Power loss, typ.
2.5 W

Available Offers

(33)
Best offer
6ES7221-1BH32-0XB0 Siemens, PLC Modules & Extensions

Siemens

Available:
4 pcs.
In-Stock
Updated at: 31-10-2025
Offer from:
Trusted supplier — United Kingdom, member since 2021
6ES7221-1BH32-0XB0 Siemens, PLC Modules & Extensions

Siemens

Available:
20 pcs.
In-Stock
Updated at: 19-08-2026
Offer from:
Trusted supplier — Germany, member since 2024
Warranty:
24 months
6ES7221-1BH32-0XB0 Siemens, PLC Modules & Extensions

Siemens

Available:
1 pc.
In-Stock
Updated at: 19-08-2026
Offer from:
Trusted supplier — Germany, member since 2024
Warranty:
24 months

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Documents

Data Sheet

Datasheet for Siemens 6ES7221-1BH32-0XB0, including specifications and features.

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CAD Models

3D CAD model and technical drawings, ready for your design software.

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