Sealevel Remote I/O

Discover Sealevel’s range of reliable Remote I/O modules designed for industrial data acquisition, monitoring, and control applications. Supporting digital, analog, relay, TTL, A/D and D/A signal types, these modules make it easy to connect real-world signals to computers, controllers, PLCs and networked automation systems.

With options for Ethernet, USB, RS-232 and RS-485 connectivity, plus support for industry-standard protocols such as Modbus TCP on Ethernet models, Sealevel Remote I/O products are ideal for machine control, test and measurement, process monitoring, energy, transport, defence and industrial automation environments.

Speak to our expert team today to discuss your Remote I/O requirements and find the right Sealevel solution for your application.

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Showing 60 of 115 Sealevel Remote I/O items

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1 option available

Sealevel 520N Series

8 Optically Isolated Input/8 High-Current Form C Relay Output SeaI/O Expansion Module

From £280.00 (exc. VAT)

1 option available

Sealevel 580E Series

Ethernet Modbus TCP to 32 Isolated Dry-Contact Inputs

From £637.50 (exc. VAT)

1 option available

Sealevel 570W Series

Wireless 802.11b/g Modbus TCP to 8 Analog Input and 8 Isolated Digital Input/8 Form C Relay Output Adapter

From £502.00 (exc. VAT)

1 option available

Sealevel 530N Series

16 Isolated Digital Input/16 Open-Collector Output SeaI/O Expansion Module

From £428.50 (exc. VAT)

1 option available

Sealevel 540E-OEM Series

Ethernet Modbus TCP to 32 Open-Collector Output OEM Board

From £439.50 (exc. VAT)

1 option available

Sealevel 470E-OEM Series

Ethernet Modbus TCP to 16 Analog Input/2 Analog Output and 8 Isolated Digital Input/8 Digital Output OEM Board

From £526.50 (exc. VAT)

1 option available

Sealevel 462E-OEM Series

Ethernet Modbus TCP to 96 Channel TTL DB78F Digital I/O OEM Board

From £383.50 (exc. VAT)

1 option available

Sealevel 530E-OEM Series

Ethernet Modbus TCP to 16 Isolated Digital Input/16 Open-Collector Output OEM Board

From £489.00 (exc. VAT)

Need Help Choosing the Right Remote I/O Module?

We provide technical support for selecting reliable remote I/O solutions.

Every project has its own demands, from harsh environments to critical connectivity. Speak to our knowledgeable team who can help you identify the best fit for your setup, ensuring reliable data acquisition and long-term performance.

Call: +44 (0)1782 337 800 | Email: sales@impulse-embedded.co.uk

1 option available

Sealevel 580PoE Series

Ethernet Modbus TCP to 32 Isolated Dry-Contact Inputs

From £637.50 (exc. VAT)

1 option available

Sealevel 540N Series

32 Open-Collector Output SeaI/O Expansion Module

From £378.00 (exc. VAT)

1 option available

Sealevel 540E Series

Ethernet Modbus TCP to 32 Open-Collector Output Adapter

From £453.00 (exc. VAT)

1 option available

Sealevel 530E Series

Ethernet Modbus TCP to 16 Isolated Digital Input/16 Open-Collector Output Adapter

From £502.00 (exc. VAT)

1 option available

Sealevel 463N Series

96 Channel TTL Digital Interface SeaI/O Expansion Module

From £281.00 (exc. VAT)

1 option available

Sealevel 463E Series

Ethernet Modbus TCP to 96 Channel TTL Digital I/O Adapter

From £358.00 (exc. VAT)

1 option available

Sealevel 463E-OEM Series

Ethernet Modbus TCP to 96 Channel TTL Digital I/O OEM Board

From £332.00 (exc. VAT)

1 option available

Sealevel 450E-OEM Series

Ethernet Modbus TCP to 16 Form C Relay Output OEM Board

From £340.50 (exc. VAT)

1 option available

Sealevel 440E-OEM Series

Ethernet Modbus TCP to 32 Reed Relay Output OEM Board

From £366.00 (exc. VAT)

1 option available

Sealevel 430N Series

32 Optically Isolated Digital Input SeaI/O Expansion Module

From £230.00 (exc. VAT)

1 option available

Sealevel 430E-OEM Series

Ethernet Modbus TCP to 32 Isolated Digital Input OEM Board

1 option available

Sealevel 420N Series

16 Optically Isolated Digital Input/8 Form C Relay Output SeaI/O Expansion Module

From £266.50 (exc. VAT)

1 option available

Sealevel 420E-OEM Series

Ethernet Modbus TCP to 16 Isolated Digital Input/8 Form C Relay Output OEM Board

From £329.00 (exc. VAT)

1 option available

Sealevel 410N Series

16 Optically Isolated Digital Input/16 Reed Relay Output SeaI/O Expansion Module

From £254.50 (exc. VAT)

1 option available

Sealevel 410E-OEM Series

Ethernet Modbus TCP to 16 Isolated Digital Input/16 Reed Relay Output OEM Board

From £316.00 (exc. VAT)

1 option available

Sealevel 160PoE Series

Ethernet Modbus TCP to 32 Channel TTL Digital I/O Adapter

From £253.50 (exc. VAT)

1 option available

Sealevel 160E Series

Ethernet Modbus TCP to 32 Channel TTL Digital I/O Adapter

From £215.00 (exc. VAT)

1 option available

Sealevel 160E-OEM Series

Ethernet Modbus TCP to 32 Channel TTL Digital I/O Board

1 option available

Sealevel 120PoE-OEM Series

PoE Modbus TCP to 4 Optically Isolated Digital Input/4 Form C Relay Output Board

From £244.50 (exc. VAT)

1 option available

Sealevel 120E-OEM Series

Ethernet Modbus TCP to 4 Optically Isolated Digital Input/4 Form C Relay Output Board

From £204.50 (exc. VAT)

1 option available

Sealevel 110PoE-OEM Series

PoE Modbus TCP to 4 Optically Isolated Digital Input/4 Reed Relay Output Board

From £193.00 (exc. VAT)

1 option available

Sealevel 440M Series

RS-485 Modbus RTU to 32 Reed Relay Output Adapter

From £304.50 (exc. VAT)

1 option available

Sealevel 540S-OEM Series

RS-232 Modbus RTU to 32 Open-Collector Output OEM Board

From £366.00 (exc. VAT)

1 option available

Sealevel 540M-OEM Series

RS-485 Modbus RTU to 32 Open-Collector Output OEM Board

From £366.00 (exc. VAT)

1 option available

Sealevel 530S-OEM Series

RS-232 Modbus RTU to 16 Isolated Digital Input/16 Open-Collector Output OEM Board

From £415.00 (exc. VAT)

1 option available

Sealevel 530M-OEM Series

RS-485 Modbus RTU to 16 Isolated Digital Input/16 Open-Collector Output OEM Board

From £415.00 (exc. VAT)

1 option available

Sealevel 520S-OEM Series

RS-232 Modbus RTU to 8 Isolated Digital Input/8 High Current Form C Relay Output OEM Board

From £266.50 (exc. VAT)

1 option available

Sealevel 520M-OEM Series

RS-485 Modbus RTU to 8 Isolated Digital Input/8 High Current Form C Relay Output OEM Board

From £266.50 (exc. VAT)

1 option available

Sealevel 463S-OEM Series

RS-232 Modbus RTU to 96 Channel TTL Digital I/O OEM Board

From £257.50 (exc. VAT)

1 option available

Sealevel 463M-OEM Series

RS-485 Modbus RTU to 96 Channel TTL Digital I/O OEM Board

From £239.00 (exc. VAT)

1 option available

Sealevel 462S-OEM Series

RS-232 Modbus RTU to 96 Channel TTL DB78F Digital I/O OEM Board

From £340.50 (exc. VAT)

1 option available

Sealevel 462M-OEM Series

RS-485 Modbus RTU to 96 Channel TTL DB78F Digital I/O OEM Board

1 option available

Sealevel 450S-OEM Series

RS-232 Modbus RTU to 16 Form C Relay Output OEM Board

From £266.50 (exc. VAT)

1 option available

Sealevel 420S-OEM Series

RS-232 Modbus RTU to 16 Isolated Digital Input/8 Form C Relay Output OEM Board

From £254.50 (exc. VAT)

1 option available

Sealevel 420M-OEM Series

RS-485 Modbus RTU to 16 Isolated Digital Input/8 Form C Relay Output OEM Board

From £254.50 (exc. VAT)

1 option available

Sealevel 450M-OEM Series

RS-485 Modbus RTU to 16 Form C Relay Output OEM Board

From £266.50 (exc. VAT)

1 option available

Sealevel 410S-OEM Series

RS-232 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output OEM Board

From £242.00 (exc. VAT)

1 option available

Sealevel 410M-OEM Series

RS-485 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output OEM Board

From £242.00 (exc. VAT)

1 option available

Sealevel 440S-OEM Series

RS-232 Modbus RTU to 32 Reed Relay Output OEM Board

From £291.00 (exc. VAT)

1 option available

Sealevel 440M-OEM Series

RS-485 Modbus RTU to 32 Reed Relay Output OEM Board

From £291.00 (exc. VAT)

1 option available

Sealevel 430S-OEM Series

RS-232 Modbus RTU to 32 Isolated Digital Input OEM Board

From £217.50 (exc. VAT)

1 option available

Sealevel 430M-OEM Series

RS-232 Modbus RTU to 32 Isolated Digital Input OEM Board

1 option available

Sealevel 410W Series

Wireless 802.11b/g Modbus TCP to 16 Isolated Digital Input/16 Reed Relay Output Adapter

From £353.50 (exc. VAT)

1 option available

Sealevel 410E Series

Ethernet Modbus TCP to 16 Isolated Digital Input/16 Reed Relay Output Adapter

From £329.00 (exc. VAT)

1 option available

Sealevel 410S Series

RS-232 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output Adapter

From £254.50 (exc. VAT)

1 option available

Sealevel 410M Series

RS-485 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output Adapter

From £254.50 (exc. VAT)

1 option available

Sealevel 430W Series

Wireless 802.11b/g Modbus TCP to 32 Isolated Digital Input Adapter

From £329.00 (exc. VAT)

1 option available

Sealevel 420S Series

RS-232 Modbus RTU to 16 Isolated Digital Input/8 Form C Relay Output Adapter

From £266.50 (exc. VAT)

1 option available

Sealevel 420W Series

Wireless 802.11b/g Modbus TCP to 16 Isolated Digital Input/8 Form C Relay Output Adapter

From £366.00 (exc. VAT)

1 option available

Sealevel 440E Series

Ethernet Modbus TCP to 32 Reed Relay Output Adapter

From £378.00 (exc. VAT)

1 option available

Sealevel 430S Series

RS-232 Modbus RTU to 32 Isolated Digital Input Adapter

From £230.00 (exc. VAT)

1 option available

Sealevel 420E Series

Ethernet Modbus TCP to 16 Isolated Digital Input/8 Form C Relay Output Adapter

From £340.50 (exc. VAT)

Showing 60 of 115

Frequently Asked Questions

Learn More About Sealevel Remote I/O

Sealevel Remote I/O modules are available with communication options including Ethernet, USB, RS-232 and RS-485, depending on the product series and model. Ethernet models can support Modbus TCP communication.

Yes. Selected Sealevel Ethernet Remote I/O modules support industry-standard Modbus TCP, making them suitable for integration with industrial automation and control systems.

Sealevel’s Remote I/O range includes modules for digital inputs, relay outputs, TTL I/O, analog input, analog output, A/D and D/A functionality, depending on the model selected.

Yes. Sealevel SeaI/O systems include expansion options, allowing additional I/O modules to be added for larger installations where more input and output points are required.

Yes. Impulse Embedded can support you beyond product supply, helping you identify the right Sealevel Remote I/O module for your signal types, communication interface, software environment and installation requirements. Our team can also assist with wider system design and integration, including pairing Sealevel I/O with suitable industrial computers, embedded systems, networking hardware and control platforms. With in-house engineering expertise and a UK-based design and integration facility, we help customers build reliable, scalable solutions that are ready for deployment in demanding industrial environments.