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 115 of 115 Sealevel Remote I/O items

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1 option available

Sealevel 420M Series

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

From £266.50 (exc. VAT)

1 option available

Sealevel 430E Series

Ethernet Modbus TCP to 32 Isolated Digital Input Adapter

From £304.50 (exc. VAT)

1 option available

Sealevel 430M Series

RS-232 Modbus RTU to 32 Isolated Digital Input Adapter

From £230.00 (exc. VAT)

1 option available

Sealevel 450S Series

RS-232 Modbus RTU to 16 Form C Relay Output Adapter

From £280.00 (exc. VAT)

1 option available

Sealevel 440S Series

RS-232 Modbus RTU to 32 Reed Relay Output Adapter

From £304.50 (exc. VAT)

1 option available

Sealevel 450W Series

Wireless 802.11b/g Modbus TCP to 16 Form C Relay Output Adapter

From £378.00 (exc. VAT)

1 option available

Sealevel 440W Series

Wireless 802.11b/g Modbus TCP to 32 Reed Relay Output Adapter

From £403.00 (exc. VAT)

1 option available

Sealevel 450E Series

Ethernet Modbus TCP to 16 Form C Relay Output Adapter

From £353.50 (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 450M Series

RS-485 Modbus RTU to 16 Form C Relay Output Adapter

From £280.00 (exc. VAT)

1 option available

Sealevel 463M Series

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

From £264.50 (exc. VAT)

1 option available

Sealevel 520M Series

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

From £280.00 (exc. VAT)

1 option available

Sealevel 110PoE Series

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

From £204.50 (exc. VAT)

1 option available

Sealevel 463S Series

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

From £283.00 (exc. VAT)

1 option available

Sealevel 520E-OEM Series

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

From £340.50 (exc. VAT)

1 option available

Sealevel 463W Series

Wireless 802.11b/g Modbus TCP to 96 Channel TTL Digital I/O Adapter

From £329.00 (exc. VAT)

1 option available

Sealevel 530W Series

Wireless 802.11b/g Modbus TCP to 16 Isolated Digital Input/16 Open-Collector Output Adapter

From £526.50 (exc. VAT)

1 option available

Sealevel 520S Series

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

From £280.00 (exc. VAT)

1 option available

Sealevel 530S Series

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

From £428.50 (exc. VAT)

1 option available

Sealevel 120E Series

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

From £216.00 (exc. VAT)

1 option available

Sealevel 540M Series

RS-485 Modbus RTU to 32 Open-Collector Output Adapter

From £378.00 (exc. VAT)

1 option available

Sealevel 540W Series

Wireless 802.11b/g Modbus TCP to 32 Open-Collector Output Adapter

From £477.50 (exc. VAT)

1 option available

Sealevel 520W Series

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

From £378.00 (exc. VAT)

1 option available

Sealevel 530M Series

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

From £428.50 (exc. VAT)

1 option available

Sealevel 540S Series

RS-232 Modbus RTU to 32 Open-Collector Output Adapter

From £378.00 (exc. VAT)

1 option available

Sealevel 140E Series

Ethernet Modbus TCP to 4 Reed Relay Output Adapter

From £181.50 (exc. VAT)

1 option available

Sealevel 140PoE Series

Ethernet Modbus TCP to 4 Reed Relay Output Adapter

From £181.50 (exc. VAT)

1 option available

Sealevel 120PoE Series

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

From £263.00 (exc. VAT)

1 option available

Sealevel 130E Series

Ethernet Modbus TCP to 4 Optically Isolated Digital Input Adapter

From £170.00 (exc. VAT)

1 option available

Sealevel 130PoE Series

PoE Modbus TCP to 4 Optically Isolated Digital Input Adapter

From £170.00 (exc. VAT)

1 option available

Sealevel 150PoE Series

Ethernet Modbus TCP to 4 Form C Relay Output Adapter

From £193.00 (exc. VAT)

1 option available

Sealevel 150E Series

Ethernet Modbus TCP to 4 Form C Relay Output Adapter

From £193.00 (exc. VAT)

1 option available

Sealevel 110E Series

Ethernet Modbus TCP to 4 Optically Isolated Digital Input/4 Reed Relay Output Adapter

From £204.50 (exc. VAT)

1 option available

Sealevel 160PoE-OEM Series

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

1 option available

Sealevel 110E-OEM Series

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

From £193.00 (exc. VAT)

1 option available

Sealevel 470N Series

16 Analog Input/2 Analog Output and 8 Isolated Digital Input/8 Digital Output SeaI/O Expansion Module

From £465.50 (exc. VAT)

1 option available

Sealevel 470S-OEM Series

RS-232 Modbus RTU to 16 Analog Input/2 Analog Output and 8 Isolated Digital Input/8 Digital Output OEM Board

From £452.00 (exc. VAT)

1 option available

Sealevel 470S Series

RS-232 Modbus RTU to 16 Analog Input/2 Analog Output and 8 Isolated Digital Input/8 Digital Output Adapter

From £465.50 (exc. VAT)

1 option available

Sealevel 470W Series

Wireless 802.11b/g Modbus TCP to 16 Analog Input/2 Analog Output and 8 Isolated Digital Input/8 Digital Output Adapter

From £563.50 (exc. VAT)

1 option available

Sealevel 570M Series

RS-485 Modbus RTU to 8 Analog Input and 8 Isolated Digital Input/8 Form C Relay Output Adapter

From £403.00 (exc. VAT)

1 option available

Sealevel 570N Series

8 Analog Input and 8 Isolated Digital Input/8 Form C Relay Output SeaI/O Expansion Module

From £403.00 (exc. VAT)

1 option available

Sealevel 570S Series

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

From £403.00 (exc. VAT)

2 options available

Sealevel 440N Series

32 Reed Relay Output SeaI/O Expansion Module Board

From £291.00 (exc. VAT)

1 option available

Sealevel 470E Series

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

From £539.00 (exc. VAT)

1 option available

Sealevel 470M-OEM Series

RS-485 Modbus RTU to 16 Analog Input/2 Analog Output and 8 Isolated Digital Input/8 Digital Output OEM Board

From £452.00 (exc. VAT)

1 option available

Sealevel 470M Series

RS-485 Modbus RTU to 16 Analog Input/2 Analog Output and 8 Isolated Digital Input/8 Digital Output Adapter

From £465.50 (exc. VAT)

1 option available

Sealevel 170PoE-OEM Series

PoE Modbus TCP to 8x A/D, 2x Optically Dry Contact Input and 2 Solid-State Relay Output Board

From £292.00 (exc. VAT)

1 option available

Sealevel 170E-OEM Series

Ethernet Modbus TCP to 8 A/D, 2 Optically Dry Contact Input and 2 Solid-State Relay Output Board

From £292.00 (exc. VAT)

1 option available

Sealevel 170E Series

Ethernet Modbus TCP to 8 A/D, 2 Optically Dry Contact Input and 2 Solid-State Relay Output Adapter

From £303.50 (exc. VAT)

1 option available

Sealevel 170PoE Series

PoE Modbus TCP to 8 A/D, 2 Optically Dry Contact Input and 2 Solid-State Relay Output Adapter

From £303.50 (exc. VAT)

2 options available

Sealevel 450N Series

16 Form C Relay Output SeaI/O Expansion Module

From £266.50 (exc. VAT)

2 options available

Sealevel 462E Series

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

From £409.00 (exc. VAT)

2 options available

Sealevel 462W Series

Wireless 802.11b/g Modbus TCP to 96 Channel TTL DB78F Digital I/O Adapter

From £366.00 (exc. VAT)

2 options available

Sealevel 462S Series

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

From £368.00 (exc. VAT)

2 options available

Sealevel 462M Series

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

From £324.00 (exc. VAT)

3 options available

Sealevel 462N Series

96 Channel TTL DB78 Digital Interface SeaI/O Expansion Module

From £313.50 (exc. VAT)

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.