Sealevel Serial, I/O, and Embedded Computing Solutions

We supply Sealevel Systems' high-reliability serial, digital I/O, and embedded computing products built for long-term operation in harsh and highly regulated environments.

Their range includes PCIe and PCI serial cards, Ethernet-to-serial devices, industrial I/O modules, and fanless embedded computers. Built for use in military, medical, and industrial environments, Sealevel products are known for rock-solid performance, extended lifecycle support, and compliance with strict operational standards.

Explore our Sealevel product range or get in touch for specialist advice.

Enquire Now

Showing 240 of 426 Sealevel Products items

Sort By:

View:

Filter your results

Load Previous

2 options available

Sealevel 7802ec Series

8 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card

From £415.50 (exc. VAT)

4 options available

Sealevel 7406e Series

4 Port RS-232 Low Profile PCI Express Asynchronous Serial Card

5 options available

Sealevel 7406 Series

4 Port RS-232 Low Profile PCI Serial Card

From £481.50 (exc. VAT)

1 option available

Sealevel 7404e Series

4 Port RS-232/422/485 PCI Express Asynchronous Serial Card

1 option available

Sealevel 7402e Series

4 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card

2 options available

Sealevel 7205ec Series

2 Port RS-232/422/485 Low Profile PCI Express Asynchronous Serial Card

From £253.00 (exc. VAT)

2 options available

Sealevel 7205 Series

2 Port RS-232/422/485 Low Profile PCI Serial Card

From £674.50 (exc. VAT)

Sealevel SS-DB9-ROHS

DB9 Female to DB9 Male - Serial Surge Suppressor

Sealevel SS-DB25-ROHS

DB25 Female to DB25 Male - Serial Surge Suppressor

1 option available

Sealevel ISO-1R Series

1 Port SeaISO Ruggedised Inline USB Isolator Cable

1 option available

Sealevel ISO-1 Series

1 Port SeaISO Inline USB Isolator

1 option available

Sealevel ISO-1-OEM Series

1 Port SeaISO Embedded Inline USB Isolator

Our Team Is Here to Help

Get in touch with us today.

Speak to a member of our friendly team to discuss your project and find out how we can support you. Our technical sales team are ready to answer your questions.

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

1 option available

Sealevel HUB7P-UK Series

7 Port Industrial USB 2.0 Hub

1 option available

Sealevel HUB7M-UK Series

7 Port Industrial USB 2.0 Hub

1 option available

Sealevel HUB7i-UK Series

7 Port Isolated Industrial USB 2.0 Hub

1 option available

Sealevel HUB4PH-UK Series

4 Port Industrial USB 2.0 Hub

1 option available

Sealevel HD104 Series

PC/104 to 2.5" Hard Disk Drive Adapter

2 options available

Sealevel 7204e Series

2 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card

4 options available

Sealevel 7204 Series

2 Port RS-422/485 PCI Serial Card

1 option available

Sealevel 7203e Series

2 Port RS-232/422/485 Isolated PCI Express Asynchronous Serial Card

From £205.00 (exc. VAT)

2 options available

Sealevel 7202 Series

2 Port RS-232 PCI Serial Card

2 options available

Sealevel 7201 Series

2 Port RS-232/422/485 PCI Serial Card

2 options available

Sealevel 7161e Series

16 Port RS-232 PCI Express Asynchronous Serial Card

3 options available

Sealevel 7161 Series

16 Port RS-232 PCI Serial Card

2 options available

Sealevel 7108 Series

1 Port RS-232/422/485 Isolated Low Profile PCI Serial Card

From £636.00 (exc. VAT)

2 options available

Sealevel 7106e Series

1 Port RS-232/422/485/530 Low Profile PCI Express Asynchronous Serial Card

From £229.00 (exc. VAT)

2 options available

Sealevel 7106 Series

1 Port RS-232/422/485/530 Low Profile PCI Serial Card

From £437.00 (exc. VAT)

4 options available

Sealevel 7104 Series

1 Port RS-232 Low Profile PCI Serial Card

From £445.00 (exc. VAT)

1 option available

Sealevel 687U Series

8 Port RS-232/485 (RJ45) Versacom Serial to USB Adapter

From £530.00 (exc. VAT)

1 option available

Sealevel 681U Series

8 Port RS-232 (RJ45) Serial to USB Adapter

From £513.00 (exc. VAT)

1 option available

Sealevel 647U Series

4 Port RS-232/485 (RJ45) Versacom Serial to USB Adapter

From £378.00 (exc. VAT)

1 option available

Sealevel 641U Series

4 Port RS-232 (RJ45) Serial to USB Adapter

1 option available

Sealevel 580PoE Series

Ethernet Modbus TCP to 32 Isolated Dry-Contact Inputs

From £637.50 (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 – 8 Isolated Digital Input/8 Form C Relay Output Adapter

From £502.00 (exc. VAT)

1 option available

Sealevel 570U Series

USB Modbus RTU to 8 Analog Input – 8 Isolated Digital Input/8 Form C Relay Output Adapter

1 option available

Sealevel 570N Series

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

From £403.00 (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 540U Series

USB Modbus RTU to 32 Open-Collector Output Adapter

1 option available

Sealevel 540U-OEM Series

USB Modbus RTU to 32 Open-Collector Output OEM Board

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 540E-OEM Series

Ethernet Modbus TCP to 32 Open-Collector Output OEM Board

From £439.50 (exc. VAT)

1 option available

Sealevel 5402e Series

4 Port RS-232/422/485/530/530A/V.35 PCI Express Synchronous Serial Card

From £1,473.00 (exc. VAT)

1 option available

Sealevel 5402 Series

4 Port RS-232/422/485/530/530/V.35 Synchronous Serial PCI Card

From £1,161.50 (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 530U Series

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

1 option available

Sealevel 530U-OEM Series

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

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 530E Series

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

From £502.00 (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)

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 520U Series

USB Modbus RTU to 8 Isolated Digital Input/8 High Current Form C Relay Output Adapter

1 option available

Sealevel 520U-OEM Series

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

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)

2 options available

Sealevel 5104e Series

1 Port RS-232/422/485/530/530A/V.35 Low Profile PCI Express Synchronous Serial Card

From £584.50 (exc. VAT)

2 options available

Sealevel 5104 Series

1 Port RS-232/422/485/530/530A/V.35 Low Profile PCI Synchronous Serial Card

2 options available

Sealevel 5103e Series

1 Port RS-232 Low Profile PCI Express Synchronous Serial Card

From £453.50 (exc. VAT)

2 options available

Sealevel 5103 Series

1 Port RS-232 Low Profile PCI Synchronous Serial Card

2 options available

Sealevel 5102e Series

1 Port RS-232/422/485/530/530A/V.35 Low Profile PCI Express Synchronous Serial Card

From £534.00 (exc. VAT)

Showing 240 of 426

What Is Sealevel’s Specialty?
Sealevel focus on serial and I/O expansion solutions, including USB-to-serial adaptors, digital I/O modules and embedded control systems. Their designs are trusted where reliable connectivity is required across industrial and military sectors.

Why Choose Sealevel Hardware?
With extensive experience in serial communications, Sealevel products provide the robust connectivity needed to extend the life of legacy equipment. Many models also meet MIL-STD specifications for defence projects.

Why Source in the UK Through Impulse?
We deliver Sealevel hardware to our UK customers with technical guidance and lifecycle support, ensuring integration is seamless and supply is dependable across long-term projects.