Why Choose the Unitronics IO-DI8-RO4-L Digital I/O Expansion Module?
The Unitronics IO-DI8-RO4-L is a compact and flexible digital I/O expansion module designed to enhance the capabilities of compatible Unitronics Vision and OPLC control systems. Featuring 8 digital inputs and 4 relay outputs, the module provides an efficient solution for machine builders, panel manufacturers and automation engineers requiring additional field connectivity in 12V DC control applications.
The IO-DI8-RO4-L is specifically engineered for systems operating with a 12V DC supply. Supporting both PNP (source) and NPN (sink) input configurations, the module allows seamless integration with a wide range of sensors, switches and signalling devices. The relay outputs provide dependable switching of AC and DC loads, making the module suitable for industrial control and monitoring applications.
With DIN rail mounting, built-in diagnostics and an integrated 5kHz high-speed counter input, the IO-DI8-RO4-L delivers reliable performance for machine automation, process monitoring and equipment control systems.
Key Advantages
- Combines 8 digital inputs and 4 relay outputs in a single compact module.
- Designed specifically for 12V DC control systems.
- Supports both PNP and NPN input wiring.
- Integrated 5kHz high-speed counter functionality.
- Relay outputs suitable for switching AC and DC loads.
- Compact DIN rail-mounted design saves control panel space.
- Compatible with selected Unitronics Vision and OPLC controllers.
Key Features
- Unitronics IO-DI8-RO4-L digital I/O expansion module.
- 8 digital inputs.
- 4 relay outputs.
- 12V DC nominal operation.
- PNP (source) or NPN (sink) input compatibility.
- Input 7 supports 5kHz high-speed counting.
- 16-bit counter resolution.
- Communication and I/O status LED indicators.
- DIN rail or panel mounting options.
Reliable 12V Digital Control and Monitoring
The Unitronics IO-DI8-RO4-L enables engineers to expand PLC functionality by adding digital inputs and relay outputs without replacing existing controllers. The module is ideal for connecting sensors, push buttons, limit switches and control devices within industrial automation systems operating on 12V DC control circuits.
Its integrated high-speed counter capability supports pulse counting, encoder monitoring and frequency measurement applications, while the relay outputs provide reliable switching of contactors, solenoids and other industrial loads.
Typical Applications
- Industrial machinery automation.
- Packaging and assembly systems.
- Material handling equipment.
- Conveyor control systems.
- OEM control panels.
- Pulse counting and encoder monitoring.
- Production line monitoring.
- Process automation systems.
