IO-RO16 – Unitronics 16 relay outputs module

Why Choose the Unitronics IO-RO16 Relay Output Expansion Module?

The Unitronics IO-RO16 is a reliable and cost-effective relay output expansion module designed to extend the output capabilities of compatible Unitronics Vision and OPLC controllers. Featuring 16 relay outputs, the module enables automation engineers and machine builders to control a wide range of industrial devices including contactors, solenoids, alarms, indicators, valves and other field equipment from a single PLC platform.

Designed for industrial automation environments, the IO-RO16 operates from a 24V DC power supply and provides sixteen independent SPST-NO relay outputs arranged in two groups. The relay-based design allows switching of both AC and DC loads, offering excellent flexibility for machine control and process automation applications.

With DIN rail mounting, LED status indication and seamless integration with Unitronics expansion adapters, the IO-RO16 provides a dependable solution for expanding PLC output capacity while maintaining simple installation and maintenance procedures.

Key Advantages

• Provides 16 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.
• LED indicators simplify diagnostics and troubleshooting.
• Ideal for machine control, process automation and OEM equipment.

Key Features

• Unitronics IO-RO16 relay output expansion module.
• 16 relay outputs arranged in two groups.
• 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.

Technical Specifications

• Manufacturer: Unitronics
• Model: IO-RO16
• Product type: Relay output expansion module
• Number of outputs: 16 relay outputs
• Output type: SPST-NO relay
• Output groups: 2 groups of 8 outputs
• Nominal operating voltage: 24V DC
• Operating voltage range: 20.4-28.8V DC
• Maximum current consumption: 132mA @ 24V DC
• Relay rating: 230V AC / 12V DC / 24V DC
• Status indication: RUN LED and output LEDs
• Maximum current consumption from adapter: 60mA @ 5V DC
• Typical power consumption: 0.18W @ 5V DC
• Protection rating: IP20 / NEMA 1
• Operating temperature: 0°C to +50°C
• Storage temperature: -20°C to +60°C
• Humidity: 5% to 95% non-condensing
• Dimensions (W × H × D): 80 × 93 × 60 mm
• Weight: Approximately 125 g
• Mounting type: 35mm DIN rail or panel mounting

Reliable Relay Control for Industrial Automation

The IO-RO16 is designed to provide additional relay outputs for automation systems that require control of multiple field devices. Its relay-based architecture allows direct switching of AC and DC loads, making it suitable for controlling motors, contactors, valves, warning beacons and industrial signalling devices.

The module connects to compatible Unitronics controllers through an expansion adapter and can be combined with other expansion modules to create scalable control systems. Its compact construction and industrial-grade design make it ideal for OEM machinery, manufacturing systems and process control installations.

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.

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.