Full Range of IO Module Options
From compact and highly integrated design to modular and flexible expansion, from economical entry-level options to high-performance industrial applications, our IO Modules cover six series, EX, RB, RS, FS, LS, SD, and support a wide range of protocols and signal types to meet the needs of different industries, Includes digital input/output, analog input/output, temperature acquisition, encoder, and communication modules.
Ultra-slim hot-swappable IO modules with 12mm width, rich signal types, and real-time diagnostics for cabinet space-saving automation.
Compact card-style IO with stable locking, multi-protocol support, and reliable performance in high-vibration or extreme environments.
Power-line communication IO module using Decowell’s WellBUS for ultra-simplified wiring in logistics and long-distance field applications.
IP67-rated waterproof IO module with IO-Link master-slave architecture for smart sensor connectivity and harsh industrial conditions.
All-in-one IO modules with flexible slot configurations, hot-swappable terminals, and an outdoor-ready design for compact automation needs.
Cost-effective and stable one-piece IO solution with 45° Ethernet design and push-in terminals to simplify on-site wiring.
Compatible with Mainstream PLC
Decowell IO Module supports PROFINET, EtherCAT, Modbus-TCP, EtherNet/IP, CC-Link and other industrial protocols, and is compatible with Siemens, Omron, Mitsubishi, Schneider, Rockwell and other mainstream PLCs. system, ensuring stable data transmission and improving the efficiency of equipment interconnection!
PROFINET IO modules offer real-time Ethernet communication, which is ideal for high-speed industrial control. Compatible with EX, FS, RS, SD, RB, LS.
PROFIBUS-DP IO modules ensure fast and stable data exchange for fieldbus automation. We are supported by the EX and RB series input output module.
EtherCAT IO modules deliver ultra-fast and synchronized data transfer, perfect for motion control. Available in EX, FS, RS, SD, RB, and LS series IO.
Decowell EtherNet/IP IO modules support real-time Ethernet communication for flexible automation systems. Choose from EX, FS, SD, and RB series.
Modbus-TCP IO modules are ideal for Ethernet-based remote monitoring and SCADA. Supported by Decowell EX, RB, and RS series IO Module.
The CC-Link IO modules ensure fast and stable fieldbus communication for factory automation. Compatible with EX, RS, RB, and FS series general-purpose I/O.
CC-Link IE Field Basic IO modules provide simplified Ethernet networking for automation systems. Choose from EX, RS, and RB series flex IO modules.
CANopen IO modules are reliable for decentralized control in machinery and embedded systems. Available in EX and FS series Economical IO module.
Our DeviceNet IO modules support robust device-level networking for industrial automation. Compatible with EX and FS series safety io modules.
More Abuout DECOWELL
Decowell has become a reliable choice for industrial automation with its rich industry experience, wide range of global partners, and steadily growing sales. We specialize in the development and production of high-performance IO modules, and our products are exported to many countries and regions, and are widely used in intelligent manufacturing, industrial control, energy management and other industries.
Up to 10,000+ customers worldwide
Last year’s annual sales were $170 million
Worldwide agent city coverage of 200+
Owns 100+ intellectual property rights worldwide
High-tech factory building 6000m2
After-sales service is available 24 hours a day online
Dual R&D centers and laboratories in Nanjing and Wuxi
10+ years of industry experience and a team of engineers
Minimize Wiring with LS Discrete I/O
The LS Series I/O, utilizing Decowell’s self-developed WellBUS bus, provides a highly efficient wiring solution for discrete automation scenarios. It integrates power and signals through just one 2-core cable, greatly reducing wiring complexity and installation workload across long-line equipment in logistics, storage, and similar applications. This system ensures full-line signal control while effectively addressing historical challenges such as complicated wiring and high labor costs.
Modular & Protocol-Open RB I/O for Control Cabinets
RB IO Modules is a high-performance, modular I/O system engineered for control cabinet integration. It delivers exceptional reliability and precision with open compatibility across all major Ethernet protocols. Available in a range of form factors, it provides superior flexibility and processing power to meet the demands of complex industrial automation applications.
Rugged SD IO Modules for Harsh Machine Environments
The next-generation SD IO Modules represent a breakthrough in remote I/O systems, featuring a modular block design ideal for decentralized automation applications that eliminate the need for control cabinets. Engineered to meet both present and future demands, these robust devices support field installation and operate reliably even in extreme environmental conditions, making them suitable for direct integration into machinery.
RS Integrated IO for Unlimited Customization
The RS Series I/O system introduces a highly adaptable split design, engineered for ultimate flexibility in industrial automation. Its modular construction supports fully customizable configurations, mix and match any signal type, choose from multiple terminal options, and choose between short or long base units. The dual-slot version enhances versatility further, allowing two independent panels to be selected and combined freely for tailored control setups. Ideal for reducing integration time and simplifying inventory management, the RS Series delivers seamless scalability and reliable performance across diverse applications.
Resource
Download our selection brochure for comprehensive product technical information to help you quickly find the most suitable solution and improve selection efficiency.
Rotate, zoom, and interact with our IO modules in 3D to better understand structure, dimensions, and installation design.
For the configuration and commissioning of IO modules, we have elaborately produced a configuration video to show the operation steps in an intuitive and clear way.
Global Trust in Automation
As a trusted manufacturer and solution provider in industrial automation, we demonstrate our industry strength through active participation in leading international trade shows and frequent visits by global clients to our state-of-the-art facilities. Our integrated manufacturing approach, from in-house R&D and production to rigorous testing, ensures consistent product quality and on-time delivery.
Supported by a skilled technical team, we work closely with customers worldwide to provide tailored solutions and responsive service. Whether at exhibitions or in your project.
Proven Automation Solutions
Decowell’s I/O systems are engineered to meet the rigorous demands of global industries. From the cleanrooms of semiconductor fabs to the busy floors of automotive plants, our modular and robust solutions deliver unmatched reliability, simplify complex wiring, and accelerate time to market. Explore our proven case studies below to see how our application-specific I/O technology drives efficiency and innovation across sectors.
Decowell’s RB Series I/O delivers rugged performance for automotive production challenges. Supporting applications from stamping and welding to painting and final assembly, these modules offer high noise immunity and flexible configuration. Whether enabling precision in robotic cell welding or reliability in smart seat manufacturing, our I/O solutions help automotive suppliers and OEMs maintain high quality and continuous production flow.
Transform large-scale logistics operations with our LS Series I/O, designed to slash wiring costs and enhance scalability in warehouse automation. These decentralized modules use a single 2-core cable for both power and communication, making them ideal for sortation systems, ASRS, and conveyor networks. By reducing installation time and minimizing failure points, Decowell helps logistics leaders achieve higher throughput and lower total cost of ownership.
Decowell’s PT Series I/O modules provide the high-precision control and modular flexibility required for critical semiconductor manufacturing equipment. Deployed in wafer handling, front-end processing, encapsulation, and test (ATE) applications, our I/O systems ensure signal integrity in sensitive environments. They are integral to the performance of etching, cleaning, coating, and inspection machines, helping top manufacturers minimize downtime and maximize yield with reliable, customizable automation solutions.
Meet the speed and endurance demands of modern packaging with Decowell’s SD Series I/O. Engineered for harsh conditions, these modules are perfect for high-speed machinery like fillers, cappers, labelers, and robotic palletizers. The compact, cabinet-free design allows for distributed installation right on the machine, enabling faster response times and simpler maintenance. Achieve new levels of efficiency and uptime in your packaging operations.
Why 10000+ Clients Trust US
Decowell production workshop is a high-tech, aseptic modern production base, designed and built in strict accordance with international standards. The workshop is equipped with advanced automated production equipment and an intelligent monitoring system to ensure the accuracy, efficiency, and safety of the whole production process.
We operate dual R&D centers in Nanjing and Wuxi, with a core engineering team of 50+ experts who each bring over 20+ years of experience in developing fieldbus IO modules. Our deep technical roots ensure every product is built for industrial precision and long-term reliability.
Our SMT workshop is equipped with ±30μm high-precision pick-and-place machines, 10μm 3D SPI optical inspection systems, and fully automated solder paste printers and reflow ovens. Every board is produced with exceptional accuracy and process stability.
In the assembly area, we use fiber laser markers, automatic dispensing systems. , and four high-efficiency production lines. Every module undergoes visual inspection and automated electrical testing to ensure both appearance and functionality meet strict quality standards.
All products are validated through our comprehensive testing platforms, including high-low temperature cycles, EMC interference tests, power frequency noise testing, and discrete signal stability verification — ensuring performance under real industrial conditions.
All materials are inspected based on SIP protocols to ensure incoming quality. Our smart warehouse system manages inventory with high precision and traceability, supporting stable production and on-time delivery.
We provide full after-sales service, including remote engineer guidance, on-site troubleshooting, and startup support. Whether you need assistance with installation, debugging, or field integration, our technical team is always ready to help.
More About Our IO Module
By reading the Data Sheet, engineers and technicians can more accurately select, configure and integrate IO Modules to ensure system stability and efficient operation.
- Data Sheet
- The Real Scene at DECOWEL
- 3D Module
- After-Sales Service
| 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 provide comprehensive after-sales support to ensure that your IO modules operate efficiently in various application scenarios:
✔Product Selection Advice – Recommend the most suitable IO solution according to your usage scenario and scale.
✔ Remote Installation and Commissioning Guidance – Assist you in completing installation and commissioning quickly through video or online support.
✔ Technical data support – Provide detailed manuals, configuration tutorial videos, and configuration files to make operation easier.
✔On-site Problem Troubleshooting – Remotely diagnose or dispatch engineers to assist in solving system faults and ensure stable operation.
Real Customer Feedback
We were looking for an IO module that was compatible with Profinet and Modbus-TCP to meet the needs of different customers, but all the products on the market were either overpriced or of questionable compatibility. In the end, we chose the DECOWELL IO module, and the results of the tests were exactly as we expected, and the price-performance ratio was far better than that of European and American brands. Thanks for your patience and professionalism!
James WalkerTechnical Director, Automation Systems Integration, UKWe needed to deliver a batch of 500 IO modules within 30 days, but the lead time of the European and American brands we were working with was 8-10 weeks, which had a serious impact on the project schedule. decowell delivered the modules in 30 days, and the quality of the modules fully met the requirements. After this smooth delivery, we decided to include their IO modules in our long-term supply chain
Carlos MéndezPurchasing Manager | Distributor of industrial control equipment in MexicoIn the past, the IO modules we were using had frequent communication failures, causing short production line stoppages and time-consuming and laborious troubleshooting every time. Since switching to DECOWELL IO modules, we have increased productivity by 15%, reduced downtime by 30%, and greatly reduced maintenance costs.
Olivier DupontProduction Manager | Intelligent Manufacturing OEM, France
The price of IO modules depends on the model, function, interface type, communication protocol, and other factors. Discounts are available for bulk purchases, please contact our sales team for specific quotes
We support flexible purchasing, some models can provide low MOQ (MOQ 1-5 units), suitable for new customer testing or small quantity purchasing, please contact our sales staff for specific MOQ.
Yes, we can provide prototypes for customers to test, but prototypes need to be charged, and part of the cost can be deducted after confirming the purchase. Welcome to contact us to apply for prototype testing.
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Find the IO solution that’s right for you
In industrial automation, choosing the right IO module is critical to system stability, scalability, and overall cost control. We offer a wide range of IO solutions, including Expansion IO, Distributed IO, Integrated IO, IP67 IO, and Onboard IO, to meet the needs of OEMs, system integrators, resellers, and other customers.
Whether you need modular expansion, high protection level field installation, or integrated control functions to optimize costs, our IO modules provide high-performance, stable and reliable options. Meanwhile, all of our products are CE, UL, and RoHS certified and have undergone 91 stringent tests to ensure long-term operation in various industrial environments.
Our IO modules are designed with high interference immunity and have passed 91 reliability tests, including electrostatic discharge, surge test, and high and low-temperature test, to ensure stable operation in harsh industrial environments. In addition, FS series Integrated IO reduces the use of additional equipment by integrating control functions, thus enhancing system reliability.
DECOWELL IO modules are plug-and-play, which reduces installation and commissioning time, and at the same time, the price is more advantageous compared with European and American brands, OEMs and integrators can get better prices through bulk purchase and agency policy. In addition, RB series Expansion IO adopts a modular design, which can be freely expanded according to the demand, and significantly reduces the initial investment cost.
The IO modules support a variety of mounting methods, including DIN-rail mounting, wall mounting, and embedded mounting, which are suitable for different application scenarios. Among them, DIN-rail IO modules (e.g. EX series) are suitable for installation in control cabinets, while IP67-rated IO modules (e.g. SD series) can be directly mounted on field devices without additional protection measures.
This remote IO module is widely used in a variety of industries such as smart manufacturing, robot control, automated production lines, IoT, building control, energy management, and so on. For example, Distributed IO (LS series) is suitable for large-scale distributed control systems, while Onboard IO (PT series) is suitable for embedded control of compact devices.
