Remote I/O Modules for Industrial Control and Monitoring

Explore our extensive range of industrial Remote I/O modules designed to bring reliable acquisition and control of digital, analog, and relay signals to your networked control systems. With support for Ethernet, serial, USB, wireless and fieldbus communication, our I/O solutions are trusted in manufacturing, energy, and automation environments worldwide.

Get in touch with our expert team today to discuss your I/O requirements and find the right solution for your application.

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Remote I/O Modules

Showing 120 of 218 Remote I/O items

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420E-OEM
Sealevel 420E-OEM
Ethernet Modbus TCP to 16 Isolated Digital Input/8 Form C Relay Output OEM Board
£329.00
470M-OEM
Sealevel 470M-OEM
RS-485 Modbus RTU to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output OEM Board
£452.00
450M
Sealevel 450M
RS-485 Modbus RTU to 16 Form C Relay Output Adapter
£280.00
450E-OEM
Sealevel 450E-OEM
Ethernet Modbus TCP to 16 Form C Relay Output OEM Board
£340.50
450S-OEM
Sealevel 450S-OEM
RS-232 Modbus RTU to 16 Form C Relay Output OEM Board
£266.50
462W
Sealevel 462W
Wireless 802.11b/g Modbus TCP to 96 Channel TTL DB78F Digital I/O Adapter
£366.00
440E-OEM
Sealevel 440E-OEM
Ethernet Modbus TCP to 32 Reed Relay Output OEM Board
£366.00
450M-OEM
Sealevel 450M-OEM
RS-485 Modbus RTU to 16 Form C Relay Output OEM Board
£266.50
470M
Sealevel 470M
RS-485 Modbus RTU to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output Adapter
£465.50
450N
Sealevel 450N
16 Form C Relay Output SeaI/O Expansion Module
£266.50
450S
Sealevel 450S
RS-232 Modbus RTU to 16 Form C Relay Output Adapter
£280.00
440M
Sealevel 440M
RS-485 Modbus RTU to 32 Reed Relay Output Adapter
£304.50
463M-OEM
Sealevel 463M-OEM
RS-485 Modbus RTU to 96 Channel TTL Digital I/O OEM Board
£239.00
470S
Sealevel 470S
RS-232 Modbus RTU to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output Adapter
£465.50
110PoE-OEM
Sealevel 110PoE-OEM
PoE Modbus TCP to 4 Optically Isolated Digital Input/4 Reed Relay Output Board
£193.00
470N
Sealevel 470N
16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output SeaI/O Expansion Module
£465.50
463M
Sealevel 463M
RS-485 Modbus RTU to 96 Channel TTL Digital I/O Adapter
£264.50
462E-OEM
Sealevel 462E-OEM
Ethernet Modbus TCP to 96 Channel TTL DB78F Digital I/O OEM Board
£383.50
463N
Sealevel 463N
96 Channel TTL Digital Interface SeaI/O Expansion Module
£281.00
462S-OEM
Sealevel 462S-OEM
RS-232 Modbus RTU to 96 Channel TTL DB78F Digital I/O OEM Board
£340.50
470S-OEM
Sealevel 470S-OEM
RS-232 Modbus RTU to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output OEM Board
£452.00
520E-OEM
Sealevel 520E-OEM
Ethernet Modbus TCP to 8 Isolated Digital Input/8 High Current Form C Relay Output OEM Board
£340.50
530M
Sealevel 530M
RS-485 Modbus RTU to 16 Isolated Digital Input/16 Open-Collector Output Adapter
£428.50
110E-OEM
Sealevel 110E-OEM
Ethernet Modbus TCP to 4 Optically Isolated Digital Input/4 Reed Relay Output Board
£193.00
463S
Sealevel 463S
RS-232 Modbus RTU to 96 Channel TTL Digital I/O Adapter
£283.00
520N
1 in stock
Sealevel 520N
8 Optically Isolated Input/8 High-Current Form C Relay Output SeaI/O Expansion Module
£280.00
463E
Sealevel 463E
Ethernet Modbus TCP to 96 Channel TTL Digital I/O Adapter
£358.00
520S
Sealevel 520S
RS-232 Modbus RTU to 8 Isolated Digital Input/8 High Current Form C Relay Output Adapter
£280.00
520M
Sealevel 520M
RS-485 Modbus RTU to 8 Isolated Digital Input/8 High Current Form C Relay Output Adapter
£280.00
530S
Sealevel 530S
RS-232 Modbus RTU to 16 Isolated Digital Input/16 Open-Collector Output Adapter
£428.50
570N
Sealevel 570N
8 Analog Input – 8 Isolated Digital Input/8 Form C Relay Output SeaI/O Expansion Module
£403.00
540M-OEM
Sealevel 540M-OEM
RS-485 Modbus RTU to 32 Open-Collector Output OEM Board
£366.00
120E
Sealevel 120E
Ethernet Modbus TCP to 4 Optically Isolated Digital Input/4 Form C Relay Output Adapter
£216.00
120E-OEM
Sealevel 120E-OEM
Ethernet Modbus TCP to 4 Optically Isolated Digital Input/4 Form C Relay Output Board
£204.50
150E
Sealevel 150E
Ethernet Modbus TCP to 4 Form C Relay Output Adapter
£193.00
570S
Sealevel 570S
RS-232 Modbus RTU to 8 x 16-bit Analog Input – 8 Isolated Digital Input/8 Form C Relay Output Adapter
£403.00
580E
Sealevel 580E
Ethernet Modbus TCP to 32 Isolated Dry-Contact Inputs
£637.50
540S-OEM
Sealevel 540S-OEM
RS-232 Modbus RTU to 32 Open-Collector Output OEM Board
£366.00
WISE-1530
Advantech WISE-1530
M2.Com Wi-Fi / BLE IoT Node
£57.50
160E
Sealevel 160E
Ethernet Modbus TCP to 32 Channel TTL Digital I/O Adapter
£215.00
170E
Sealevel 170E
Ethernet Modbus TCP to 8 A/D – 2 Optically Dry Contact Input – 2 Solid-State Relay Output Adapter
£303.50
410S
Sealevel 410S
RS-232 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output Adapter
£254.50
410N
Sealevel 410N
16 Optically Isolated Digital Input/16 Reed Relay Output SeaI/O Expansion Module
£254.50
420E
Sealevel 420E
Ethernet Modbus TCP to 16 Isolated Digital Input/8 Form C Relay Output Adapter
£340.50
420W
Sealevel 420W
Wireless 802.11b/g Modbus TCP to 16 Isolated Digital Input/8 Form C Relay Output Adapter
£366.00
410E-OEM
Sealevel 410E-OEM
Ethernet Modbus TCP to 16 Isolated Digital Input/16 Reed Relay Output OEM Board
£316.00
420M-OEM
Sealevel 420M-OEM
RS-485 Modbus RTU to 16 Isolated Digital Input/8 Form C Relay Output OEM Board
£254.50
410M
Sealevel 410M
RS-485 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output Adapter
£254.50
430S
Sealevel 430S
RS-232 Modbus RTU to 32 Isolated Digital Input Adapter
£230.00
440W
Sealevel 440W
Wireless 802.11b/g Modbus TCP to 32 Reed Relay Output Adapter
£403.00
440S
Sealevel 440S
RS-232 Modbus RTU to 32 Reed Relay Output Adapter
£304.50
420N
Sealevel 420N
16 Optically Isolated Digital Input/8 Form C Relay Output SeaI/O Expansion Module
£266.50
410M-OEM
Sealevel 410M-OEM
RS-485 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output OEM Board
£242.00
430S-OEM
Sealevel 430S-OEM
RS-232 Modbus RTU to 32 Isolated Digital Input OEM Board
£217.50
470E
Sealevel 470E
Ethernet Modbus TCP to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output Adapter
£539.00
463W
Sealevel 463W
Wireless 802.11b/g Modbus TCP to 96 Channel TTL Digital I/O Adapter
£329.00
530E-OEM
Sealevel 530E-OEM
Ethernet Modbus TCP to 16 Isolated Digital Input/16 Open-Collector Output OEM Board
£489.00
530N
Sealevel 530N
16 Isolated Digital Input/16 Open-Collector Output SeaI/O Expansion Module
£428.50
EDAM-5019
5 in stock
Inlog EDAM-5019
USB/Serial/Ethernet to 16-ch Thermocouple Input/2-ch Digital Input – 1-ch Digital Output Module
BB-WCD1TA3
Advantech BB-WCD1TA3
Indoor Wireless Mesh 802.15.4E Sensor – 3 Analog Inputs
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Showing 120 of 218

How Do Remote I/O Modules Improve System Design?
They let signals from sensors and actuators be collected close to the source and transmitted digitally over standard networks. This reduces long analogue cable runs, cutting installation costs and minimising noise interference.

What Factors Affect Performance?
Response time, update rate and supported protocols all play a role. Some modules buffer data to cope with network congestion, while others provide time synchronisation to keep multi-point systems aligned.

Why Choose an Industrial Supplier in the UK?
We provide a full portfolio of Remote I/O types with lifecycle support. UK-based technical help ensures engineers can specify the right models for integration, reducing delays during commissioning.