# Siemens SIMATIC S7-1500 Digital Input Module DI 16x24VDC 6ES7521-1BH00-0AB0

**URL:** https://aio.lv/en/product--siemens-6es75211bh000ab0--3420625
**Data updated:** 2026-05-27 17:50 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 6ES75211BH000AB0
**EAN:** 4025515080138
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 267.49 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 221.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-6es75211bh000ab0--3420625

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The Siemens SIMATIC S7-1500 DI 16x24VDC digital input module (6ES7521-1BH00-0AB0) is designed for industrial automation systems. It features 16 digital input channels operating at 24V DC. This module provides reliable signal acquisition for programmable logic controllers, ensuring efficient integration into automation networks. It is built for high performance and durability in demanding industrial environments.

## Long description

The Siemens SIMATIC S7-1500 Digital Input Module DI 16x24VDC is a high-performance component engineered for industrial automation applications. It serves as a critical interface for programmable logic controllers, allowing for the precise acquisition of 16 digital signals at 24V DC. Designed for seamless integration within the S7-1500 system family, this module ensures robust data processing and reliable communication within complex automation networks.
Advantages
This digital input module offers exceptional reliability and durability, making it suitable for continuous operation in demanding industrial environments. Its compact design facilitates space-saving installation in control cabinets, while the standardized connection technology simplifies wiring and maintenance processes. The module provides high-speed signal processing, which is essential for maintaining the efficiency and responsiveness of automated production lines and machinery.
Suitable for
Industrial automation and control systems
Signal acquisition from sensors and switches
Integration into Siemens SIMATIC S7-1500 PLC configurations
Manufacturing and process automation tasks
When it may not be suitable
This module is not intended for applications requiring analog signal processing or high-voltage inputs exceeding the specified 24V DC range. It is also not suitable for use in environments that require specific hazardous area certifications unless housed in an appropriate protective enclosure.
Key specifications
Number of digital inputs: 16
Rated input voltage: 24V DC
System compatibility: SIMATIC S7-1500
Input type: Sink/Source (Type 3 according to IEC 61131)
How to use
The module is designed to be mounted onto a standard DIN rail within the SIMATIC S7-1500 rack. After physical installation, the module is connected to the backplane bus for power and data communication. Wiring of the 16 digital inputs is performed via the front connector, ensuring that the input voltage matches the 24V DC specification. Configuration is completed through the TIA Portal software, where the module is assigned to the PLC project and parameters are set according to the specific application requirements.
What to consider before purchase
Ensure compatibility with your existing S7-1500 CPU and rack configuration
Verify that the input voltage requirements match your field devices
Check the available space in your control cabinet for mounting
Usage recommendations
Always ensure that the power supply is disconnected before installing or removing the module to prevent electrical damage. Use shielded cables for signal lines to minimize electromagnetic interference in industrial settings.

## FAQ

### How much does the Siemens SIMATIC S7-1500 DI 16x24VDC Input Module 6ES7521-1BH00-0AB0 cost, and is it available for purchase?

The price is 267.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 23.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Siemens SIMATIC S7-1500 DI 16x24VDC Input Module 6ES7521-1BH00-0AB0 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Siemens products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Siemens service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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