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IO-RO8 – Unitronics 8 relay outputs module
Unitronics IO-RO8 relay output expansion module featuring 8 relay outputs, 24V DC operation and compatibility with Unitronics Vision and OPLC automation systems.
£114.54
Why Choose the Unitronics IO-RO8 Relay Output Expansion Module?
The Unitronics IO-RO8 is a compact and dependable relay output expansion module designed to extend the output capabilities of compatible Unitronics Vision and OPLC controllers. Featuring 8 relay outputs, the module enables machine builders, control panel manufacturers and automation engineers to control contactors, solenoids, warning lights, valves and other industrial devices from a single PLC platform.
Designed for 24V DC automation systems, the IO-RO8 provides eight independent SPST-NO relay outputs capable of switching both AC and DC loads. Its relay-based design offers excellent flexibility, making it suitable for industrial control systems that require reliable electrical isolation and robust switching performance.
With DIN rail mounting, output status indicators and seamless integration via Unitronics expansion adapters, the IO-RO8 provides a simple and effective method of increasing PLC output capacity without replacing existing hardware.
Key Advantages
- Provides 8 relay outputs for PLC expansion.
- Suitable for switching both AC and DC loads.
- 24V DC operation for industrial automation systems.
- Compact DIN rail-mounted design.
- Compatible with selected Unitronics Vision and OPLC controllers.
- Relay isolation improves system flexibility and protection.
- LED indicators simplify diagnostics and troubleshooting.
Key Features
- Unitronics IO-RO8 relay output expansion module.
- 8 relay outputs.
- SPST-NO relay contacts.
- Suitable for AC and DC load switching.
- 24V DC nominal operating voltage.
- Communication status indicator LED.
- Individual output status LEDs.
- DIN rail or panel mounting options.
- Compatible with Unitronics expansion adapters.
Reliable Relay Switching for Industrial Automation
The IO-RO8 is designed to provide additional relay outputs for industrial automation systems that require control of multiple field devices. Its relay-based architecture allows direct switching of AC and DC loads, making it ideal for controlling contactors, pumps, valves, alarms and signalling devices.
The module connects to compatible Unitronics controllers via an expansion adapter and can be combined with additional I/O modules to create scalable automation systems. Its compact design and industrial-grade construction make it suitable for OEM machinery, manufacturing systems and process control applications.
Typical Applications
- Industrial machinery automation.
- Packaging and assembly equipment.
- Material handling systems.
- Process control systems.
- Pump and valve control.
- OEM machine building.
- Factory automation systems.
- HVAC and building management applications.
Technical Specifications
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| Number of I/O | 8 | |
|---|---|---|
| Product Series | Unitronics Vision I/O Expansion | |
| Device Type | Digital I/O Module | |
| Coil / Supply Voltage | 20.4–28.8 V DC | |
| Digital Outputs | 8 | |
| Output Type | Relay | |
| Signal Type / Function | Relay | |
| IP Rating | IP20 | |
| Product type | Relay output expansion module | |
| Number of outputs | 8 relay outputs | |
| Output type | SPST-NO relay | |
| Relay rating | 230V AC / 12V DC / 24V DC | |
| Output current | 5A maximum resistive load | |
| Inductive load current | 1A maximum | |
| Maximum switching frequency | 10Hz | |
| Isolation | By relay | |
| Nominal operating voltage | 24V DC | |
| Operating voltage range | 20.4-28.8V DC | |
| Maximum current consumption | 75mA @ 24V DC | |
| Current consumption from adapter | 50mA maximum @ 5V DC | |
| Typical power consumption | 0.13W @ 5V DC | |
| Protection rating | IP20 / NEMA 1 | |
| Operating temperature | 0°C to +50°C | |
| Storage temperature | -20°C to +60°C | |
| Relative humidity | 5% to 95% non-condensing | |
| Dimensions (W × H × D) | 80 × 93 × 60 mm | |
| Weight | Approximately 183 g | |
| Mounting type | 35mm DIN rail or panel mounting |
Frequently Asked Questions
What is the Unitronics IO-RO8 used for?
The IO-RO8 is a relay output expansion module used to add 8 relay outputs to compatible Unitronics PLC systems for controlling industrial devices and equipment.
How many outputs does the module provide?
The module provides 8 relay outputs for controlling AC and DC loads.
What type of outputs are included?
The IO-RO8 uses SPST-NO electromechanical relay outputs suitable for industrial control applications.
What power supply does the IO-RO8 require?
The module operates from a 24V DC supply with an operating range of 20.4V DC to 28.8V DC.
How is the module installed?
The IO-RO8 can be mounted on a standard 35mm DIN rail or directly onto a control panel using screw mounting.
Trusted by Automation Engineers Worldwide
Unitronics relay output expansion modules are widely used throughout industrial automation systems where dependable switching performance, scalable PLC expansion and long-term operational reliability are essential for machine and process control.
