Product Selection Manual
Explore our full range of IO modules, PLCs, valve terminals, and industrial switches. Use this guide to select the perfect match for your application based on protocol, signal type, installation method, and environment.
Why You Need an IO Module Selection Guide
Choosing the right IO module is critical for ensuring the reliability, compatibility, and cost-effectiveness of your automation system. At Decowell, we offer a complete selection guide that helps system integrators, OEMs, and engineers match IO modules based on:
Supported industrial protocols: PROFINET, EtherCAT, Modbus-TCP, CC-Link, etc.
Signal types: DI/DO, AI/AO, relay, encoder, and temperature input
Installation environment: IP20 cabinet mount or IP67 field install
Modular structure and expansion support (up to 32 extensions)
Our guide simplifies model comparison, speeds up decision-making, and helps avoid costly compatibility errors. Contact us directly with any question,s and we will help you with product selection.
Digital modules handle on/off signals; analog modules handle voltage/current inputs for sensors or actuators.
Yes, Decowell modules support mixed signal expansions with flexible wiring configurations.
Up to 32 modules can be cascaded using our expansion adapters.
Yes, our SD series supports IP67-rated field installation.
You can download the PDF version at the top of this page or request a customized list via our contact form.
Absolutely, our technical team can provide project-specific model recommendations.
Yes, we provide pre-sale technical consultation at no extra cost.













