⚡ Discrete I/O Extension Module for Zelio Logic

A Discrete I/O Extension Module for Zelio Logic is an add‑on module that expands the number of digital inputs and outputs available on a Zelio smart relay. It allows the controller to handle more sensors, switches, pushbuttons, relays, and actuators without upgrading to a larger PLC.

These modules are used with Zelio Logic SR3 modular bases, enabling scalable and flexible small‑automation solutions.

🔧 Key Features of Zelio Discrete I/O Extension Modules

• Digital input expansion — Adds extra 24 VDC input channels for sensors and switches.
• Digital output expansion — Relay or transistor outputs for controlling lamps, solenoids, and contactors.
• Modular plug‑in design — Snaps onto SR3 base units for quick installation.
• LED status indicators — Visual feedback for each I/O point.
• DIN‑rail mounting — Compact and easy to integrate into small panels.
• Seamless integration — Automatically recognised in Zelio Soft programming software.

🏭 Typical Applications

• Small machine automation — Extra sensors and actuators for conveyors, gates, and packaging.
• Building automation — Lighting, shutters, HVAC sequencing.
• Pump and motor control — Alternation, level control, timed switching.
• Access control — Barriers, doors, and entry systems.
• Standalone control panels — Expands logic capability without upgrading to a PLC.

⭐ One‑line summary

A Discrete I/O Extension Module for Zelio Logic expands the smart relay’s digital input/output capacity, enabling more sensors and actuators in small automation systems.