I/O Systems

I/O Systems and Expansion Modules

I/O systems extend a controller with the digital and analogue inputs and outputs a machine actually needs – thermocouple and RTD inputs, relay and transistor outputs, high-speed counters and fieldbus-coupled remote I/O. We stock expansion modules and remote I/O for ABB AC500, Unitronics, Wago, IMO and Lovato platforms.

Match the module to your controller family using the brand filter, then check channel count and signal type. The controllers themselves are under PLC and HMI & PLC combinations; network couplers and gateways are under Remote & Network.

Showing 1,030 products

Product Key Specs Price Qty Stock Actions
1SAP111300R0278 ABB TB5610-2ETH, AC500, Terminal Base,
£145.00 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 1SAP111300R0278
1SAP187100R0201 ABB TA5120-2AI-UIW 2 AI analog input channels U/I, 0 … 10V/0 … 20mA, 6 pole spring/cable front term. 3.50 mm pitch, Wide temperature range. ABB TA5120-2AI-UIW analogue input option board providing 2 analogue voltage and current inputs with 12-bit…
1SAP187100R0201 ABB TA5120-2AI-UIW 2 AI analog input channels U/I, 0 … 10V/0 … 20mA, 6 pole spring/cable front term. 3.50 mm pitch, Wide temperature range. ABB TA5120-2AI-UIW analogue input option board providing 2 analogue voltage and current inputs with 12-bit…
  • IP20
£139.00 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 1SAP187100R0201
ABB tu510-dp:s500, bus-terminal unit, Why Choose the ABB TU510?
ABB tu510-dp:s500, bus-terminal unit, Why Choose the ABB TU510?
£56.00 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 1SAP210800R0001
ABB di572:s500,digital input mod.16di 230vac Why Choose the ABB DI572?
£207.00 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 1SAP230500R0000
ABB ax522:s500,analog i/o.mod.8ai/8ao,u/i/rt Why Choose the ABB AX522?
£514.00 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 1SAP250000R0001
ABB tb521-eth-xc:ac500, terminal base, 2 slots Why Choose the TB521-ETH-XC?
£178.00 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 1SAP312100R0270
ABB cm597-eth-xc ethernet (tcp/ip, udp/ip, modbus tcp) Why Choose the CM597-ETH-XC?
£663.00 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 1SAP373700R0001
ABB dx571:s500,digital i/o.mod.8di/8do-relay Why Choose the ABB DX571?
£140.00 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 1TNE968902R2302
Wago 750-1407 16Di, 24 Vdc 3ms Lss WAGO 750-1407 16-channel digital input module designed for the WAGO I/O SYSTEM 750 modular automation…
Wago 750-1407 16Di, 24 Vdc 3ms Lss WAGO 750-1407 16-channel digital input module designed for the WAGO I/O SYSTEM 750 modular automation…
£117.02 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 750-1407
Wago 750-1417 8Di, 24 Vdc 3ms Lss 2-Wire WAGO 750-1417 16-channel digital input module designed for the WAGO I/O SYSTEM 750 modular automation…
Wago 750-1417 8Di, 24 Vdc 3ms Lss 2-Wire WAGO 750-1417 16-channel digital input module designed for the WAGO I/O SYSTEM 750 modular automation…
£69.16 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 750-1417
Wago 750-409 4Di, 24 Vdc 0.2ms Lss WAGO 750-409 4-channel digital input module for the WAGO I/O System 750 supporting 48 V…
Wago 750-409 4Di, 24 Vdc 0.2ms Lss WAGO 750-409 4-channel digital input module for the WAGO I/O System 750 supporting 48 V…
  • IP20
£41.72 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 750-409
Wago 750-348 FC Canopen, Dsub Eco WAGO 750-348 CANopen ECO fieldbus coupler with D-Sub interface for connecting WAGO I/O System 750/753…
Wago 750-348 FC Canopen, Dsub Eco WAGO 750-348 CANopen ECO fieldbus coupler with D-Sub interface for connecting WAGO I/O System 750/753…
  • 24 V
  • IP20
£221.75 ex. VAT
Manufacturer Lead Time Contact us for availability
SKU: 750-348
LED Controls specialist
● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

  • Priority sourcing and supply support
  • Flexible payment terms for qualifying organisations
  • Support for engineering, maintenance, and operations
500+ Stock lines ready to ship
1,000+ Same day despatches
3500+ Customers supported
28 Trusted Manufacturers

● latest blog

Factory Automation
Insights

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...