High-Performance Remote IO Modules
- Wide Compatibility: Seamlessly integrates with PLC, HMI, SCADA, and Industrial Control Systems
- Versatile Functionality: Digital & Analog IO, Communication, Temperature, High-Speed Counter, and More
- Flexible Form Factors: Modular, Card-Style, Integrated, and Discrete IO Solutions
- Broad Protocol Support: Modbus, Profinet, Ethernet/IP, CANopen, Profibus, and More
- Scalable Performance: Available in Economy & Upgraded Series to Fit Various Needs
- OEM Customization: Tailored IO Modules for Your Unique Applications
Remote IO vs. Local IO which One is Right for Your Industrial Automation?
In industrial automation, choosing between Remote IO and Local IO depends on your system’s requirements for performance, flexibility, and scalability. Local IO connects directly to the PLC or controller, ensuring low latency and high reliability, making it ideal for high-speed, real-time applications where minimal delay is critical. In contrast, Remote IO extends input and output capabilities over industrial networks like Modbus, Profinet, and Ethernet/IP, reducing wiring complexity and enabling distributed control across multiple locations. If your setup requires fast response times and centralized control, Local IO is the best fit. However, for large-scale, modular, or geographically dispersed systems, Remote IO provides greater flexibility and cost efficiency.
Want to find the perfect IO solution for your PLC, HMI, or SCADA system? Explore Our IO Modules
Remote IO By Series
We offer a wide range of Remote IO Modules, each designed to meet different industry demands. Whether you need ultra-thin space-saving modules, high-integration solutions, rugged IP67 protection, or simplified wiring for large-scale automation, we have the perfect series for you. Explore our RB, EX, RS, FS, LS, and SD series to find the best fit for your PLC, HMI, and industrial control systems.
Stable, high-value IO module with multi-protocol support, angled Ethernet port for durability, and PUSH-IN terminals for quick wiring.
WellBUS-based minimalist wiring, uses a single two-core cable for power and control, reducing costs and simplifying large-scale automation.
Integrated IO module with hot-swappable mixed signals, compact design, and protective enclosures for flexible installation.
12mm ultra-thin design saves cabinet space, supports hot-swapping, and ensures fast, precise signal processing.
Space-saving card-style IO with multi-bus support, secure snap-lock connections, and stable performance in harsh environments.
Waterproof and dustproof IP67 design, IO-LINK support, and real-time diagnostics for harsh environments and outdoor applications.
Remote IO By Form Factors
Different industrial environments require different IO module forms. Whether you need expansion flexibility, an all-in-one integrated solution, rugged IP67 protection, or discrete IO for precise control, Our remote io module is the perfect option for your automation system.
Easily expand your PLC and industrial control systems with modular IO that adapts to your growing needs, you can choose the RB&EX series.
All-in-one design combines communication, signal processing, and power for space-saving efficient automation. You can choose the FS&RS series.
Built for harsh environments, these rugged modules ensure reliable performance in outdoor and heavy-duty applications. You can choose the SD series.
Ideal for specialized control tasks, offering high-precision input and output options tailored to complex automation setups. You can choose the LS series.
Remote IO Modules by Price & Performance
DECOWELL Remote IO comes in three categories based on price and performance to suit your needs, whether you’re looking for a basic solution, a balanced option, or top-tier performance.
Economy Remote IO ModuleThe Economy Series offers an affordable solution with basic functionality, perfect for entry-level projects or cost-sensitive applications. Ideal for simple automation systems.
Standard Remote IO ModuleThe Standard Series combines good performance and affordable pricing, offering more features and better precision for mid-range industrial applications.
Advanced Remote IO ModuleWith faster processing speeds, greater precision, and support for advanced protocols like PROFINET and EtherCAT, it’s perfect for complex and high-performance applications.
Product Feature Box
The Remote IO Modules are designed with efficiency, reliability, and ease of use in mind. From space-saving designs to intelligent diagnostics, these features ensure seamless installation, fast troubleshooting, and optimal performance for your automation systems.

Angled Ethernet ports reduce cable bending stress, improving durability and long-term reliability.

Instant disconnection alerts help pinpoint faulty slave modules, minimizing downtime and troubleshooting efforts.

Bigger terminal openings allow easier and faster wiring, reducing installation time and ensuring stronger connections.

Built-in diagnostics and LED indicators allow real-time monitoring and rapid issue resolution.

Ultra-thin designs optimize cabinet space, making them perfect for tight installation environments.

Tool-free snap-on mounting makes installation quick, secure, and effortless, saving valuable setup time.
Supports Hot-swapping
With a hot-swappable design, remote IO modules can be replaced without shutting down the system, ensuring continuous operation. Whether performing maintenance or upgrading hardware, there’s no need to halt production, which reduces downtime and improves efficiency. This is ideal for critical industrial environments where every second counts.
Efficient Diagnosis
Decowell Remote IO Integrated diagnostic features allow for real-time monitoring of system health. In case of a fault, the system immediately identifies the affected expansion IO and provides visual and system alerts, enabling quick troubleshooting. This proactive approach helps prevent unexpected failures, reduces manual inspection efforts, and keeps your automation running smoothly.
Conventional Wiring
The Remote IO module adopts powerline communication technology, allowing both power and data signals to be transmitted over a single two-core cable. This significantly reduces wiring complexity, eliminates excessive cable use, and cuts down installation and labor costs. Streamlining the wiring process enhances system reliability and scalability, making it perfect for large-scale automation setups such as logistics and warehousing.
Various Terminal Blocks
Our IO Modules support multiple terminal options to accommodate different application needs. Compatible with E-CON terminals, 3-in-1 European-style terminals, and other standard connections, they provide greater flexibility for wiring and integration. This ensures seamless compatibility with various sensors, actuators, and industrial controllers, making deployment faster and more efficient.
Resource

Easily download IO module configuration files to ensure fast and accurate system integration with your PLC or control system.

Access specialized debugging tools that help you quickly test, diagnose, and optimize your IO modules for maximum performance.

Download high-resolution CAD drawings and wiring diagrams to assist with installation, planning, and system design.
Company Advantage

With 10,000+ global partners, we are a leading provider of high-performance Remote IO Modules, delivering cutting-edge automation solutions worldwide. Our strong R&D team ensures continuous innovation, while our dedicated after-sales support guarantees seamless customer service. As a manufacturer and exporter, we offer cost-effective solutions without compromising on quality. Backed by international certifications (CE, RoHS, UL, etc.), our products meet the highest industry standards, ensuring safety, reliability, and global compliance. Partner with us for professional, efficient, and future-ready automation solutions.
Remote IO Application
Remote IO Modules are widely used in high-demand industrial environments, delivering reliable performance, seamless integration, and precise control. With extensive experience across multiple industries, we provide tailored solutions that enhance efficiency, scalability, and automation reliability.

In consumer electronics manufacturing, precision and efficiency are critical. Our Remote IO Modules offer ultra-fast response times, compact designs, and multi-protocol support, ensuring stable and accurate signal processing in PCB assembly, SMT lines, and automated testing equipment.

Automotive production demands high-reliability automation. Our hot-swappable IO modules with advanced diagnostics keep robotic welding, assembly lines, and quality inspection systems running with minimal downtime and seamless PLC communication.

Battery manufacturing requires strict process control to ensure safety and consistency. Our Remote IO Modules, with real-time monitoring, efficient data acquisition, and strong EMC resistance, optimize coating, slitting, and cell formation processes for higher yield and stability.

For automated warehouses and conveyor systems, our powerline communication-based IO modules drastically reduce wiring complexity, while real-time diagnostics and fast response times enhance efficiency in sorting, packaging, and AGV operations.
Why Choose Us
At the core of our success is a commitment to excellence in both customer support and product quality. We offer not only industry-leading Remote IO Modules but also an exceptional level of customer care and precision manufacturing. From expert guidance to advanced production techniques, we ensure that every solution is reliable, efficient, and tailored to meet your needs.

Our dedicated after-sales team is here to assist with technical support, product selection, configuration files, and even on-site assistance. Whether you need help choosing the right module, customizing a solution, or troubleshooting a problem, we provide fast, effective support to ensure smooth implementation and long-term reliability.
With state-of-the-art production facilities, we maintain the highest standards of product quality. Every Remote IO Module is subjected to stringent testing under real-world conditions, ensuring reliable performance in the most demanding environments. Our fully automated production lines allow us to deliver consistent, high-quality products that meet the exact specifications of your project.
More About Remote IO Modules
The following product information is here to support your selection process. If you’d like to learn more, feel free to reach out to our sales team for further assistance.
- Data Sheet
- After-Sales Service
- Our Company
- Certificates
| Date Sheet | RB | RS | SD | LS | FS | EX |
|---|---|---|---|---|---|---|
| Picture | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
| DI | √ | √ | √ | √ | √ | √ |
| DO | √ | √ | √ | √ | √ | √ |
| Relay Output | √ | × | √ | √ | √ | √ |
| AI | √ | √ | × | × | × | √ |
| AO | √ | √ | × | × | × | √ |
| Installation | DIN35 rail | DIN35 rail、screw | screw | save wiring | DIN35 rail | DIN35 |
We are committed to providing exceptional after-sales support to ensure the smooth operation of your automation solutions. From expert product selection to in-depth technical documentation, we offer a full range of services including user manuals, configuration videos, technical support, and maintenance. Additionally, our software tools and certifications ensure seamless integration and compliance with industry standards. With us, you’re not just purchasing a product,you’re gaining a trusted partner dedicated to your success.
Testimonials
Our Remote IO modules support a wide range of communication protocols, including PROFINET, EtherCAT, EtherNet/IP, DeviceNet, Modbus TCP, and more, ensuring compatibility with major PLC brands and industrial networks.
The choice of module depends on factors such as the number of input/output points, communication protocol, environmental conditions, and specific application requirements. Our team provides expert product selection guidance to help you choose the best solution based on your project needs.
We offer a 1-year warranty on all our Remote IO modules.
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Why Do System Integrators & OEMs Prefer Modular Remote IO Solutions?
System integrators and OEMs prefer modular remote IO solutions for their unrivaled flexibility, scalability, and ease of integration. Modular systems allow for rapid customization, making it easier to set up to meet the specific requirements of each project. By using remote IO modules, they can decentralize the control system, reduce wiring complexity and minimise the footprint in the control cabinet. This speeds up installation, simplifies maintenance and reduces downtime.
In addition, modular remote IO solutions support a wide range of communication protocols and can handle both digital and analog signals, making them ideal for a wide range of industries and applications. With hot-swappable modules and built-in diagnostics, these solutions ensure operational efficiency and reliability, which is critical for integrators and OEMs looking for high-performance, cost-effective automation systems.
Depending on the series, our Remote IO modules can support anywhere from 16 to 64 IO points per module. The FS Series supports up to 32 points, while the RB Series and RS Series offer flexible configurations to suit both small and large-scale automation projects.
Yes, our modules are designed to be compatible with all major PLC brands, including Siemens, Rockwell Automation, Mitsubishi, Schneider Electric, and more.
We offer product demos and samples for qualified customers. You can reach out to our sales team to request a demo unit or a sample for evaluation in your application.
Yes, we offer software tools and libraries for seamless integration with your existing automation systems. Our team also provides support for configuring the modules with other industrial software platforms, ensuring a smooth integration process.
Our modules undergo rigorous testing at various stages of the manufacturing process. This includes performance testing, environmental testing (e.g., temperature, humidity), and compliance with international safety standards. We also perform 100% quality checks before shipping to guarantee reliability and durability.



















































