Modular Expansion Remote I/O Modules for Industrial Automation

Easily scale your industrial control system with our expansion remote I/O modules, engineered for flexible integration across a wide range of automation environments. Our modules offer rugged performance and modular connectivity, available in analog, digital, and mixed-signal configurations

We have been supplying remote I/O modules for over 20 years. Our comprehensive range includes Ethernet, USB, serial, wireless and fieldbus I/O modules offering analog, digital and relay acquisition and control.

Speak to our friendly team today to find out how we can support your next project.

Enquire Now
Expansion Remote I/O Modules

Showing 12 of 12 Expansion Remote I/O Modules items

Filter your results
Clear Filters
  • Availability
  • I/O Type
530N
Sealevel 530N
16 Isolated Digital Input/16 Open-Collector Output SeaI/O Expansion Module
£428.50
520N
1 in stock
Sealevel 520N
8 Optically Isolated Input/8 High-Current Form C Relay Output SeaI/O Expansion Module
£280.00
470N
Sealevel 470N
16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output SeaI/O Expansion Module
£465.50
463N
Sealevel 463N
96 Channel TTL Digital Interface SeaI/O Expansion Module
£281.00
462N
Sealevel 462N
96 Channel TTL DB78 Digital Interface SeaI/O Expansion Module
£313.50
450N
Sealevel 450N
16 Form C Relay Output SeaI/O Expansion Module
£266.50
440N
Sealevel 440N
32 Reed Relay Output SeaI/O Expansion Module – board only
£291.00
430N
Sealevel 430N
32 Optically Isolated Digital Input SeaI/O Expansion Module
£230.00
420N
Sealevel 420N
16 Optically Isolated Digital Input/8 Form C Relay Output SeaI/O Expansion Module
£266.50
410N
Sealevel 410N
16 Optically Isolated Digital Input/16 Reed Relay Output SeaI/O Expansion Module
£254.50
570N
Sealevel 570N
8 Analog Input – 8 Isolated Digital Input/8 Form C Relay Output SeaI/O Expansion Module
£403.00
540N
Sealevel 540N
32 Open-Collector Output SeaI/O Expansion Module
£378.00
When Do You Need Expansion I/O?
Expansion modules increase the channel count of a base I/O system without replacing the main unit. They are useful when projects grow over time and more signals must be monitored.

What Types of Signals Can Be Expanded?
Options include digital inputs and outputs, analogue channels, temperature sensors and relay outputs. Mixing module types allows a single system to support varied signals.

Why Is Lifecycle Support Important?
We supply expansion modules with guaranteed availability for years, giving UK projects confidence that future system growth can use identical hardware.