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.

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Showing 360 of 426 Sealevel Products items

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1 option available

Sealevel 4103 Series

1 Port Isolated RS-232/422/485 Ethernet Serial Device Server

2 options available

Sealevel 4102 Series

1 Port RS-422/485 Ethernet Serial Device Server

1 option available

Sealevel 4030 Series

48 Channel TTL Digital I/O ISA Card

2 options available

Sealevel 3730 Series

16 Isolated Digital Input/16 Reed Relay Output PC/104 Module – DIO-32.104

2 options available

Sealevel 3720 Series

16 Isolated Digital Input PC/104 Module – DIO-104.OPTO

2 options available

Sealevel 3710 Series

16 Reed Relay Output PC/104 Module – DIO-104.REL

2 options available

Sealevel 3701 Series

48 Channel TTL Digital I/O PC/104 Module – DIO-48.PC104

1 option available

Sealevel 3588 Series

8 Port RS-485 PC/104 Serial Card

Sealevel 3541-KT

4 Port RS-232/422/485 PC/104 Serial Card Kit (C4.104-ULTRA Kit)

1 option available

Sealevel 3540 Series

4 Port RS-232/422/485 PC/104 Serial Card

1 option available

Sealevel 3514 Series

1 Port RS-232/422/485/530/530A/V.35 PC/104+ Synchronous Serial Card

1 option available

Sealevel 3512 Series

1 Port RS-232/422/485/530/530A/V.35 PC/104 Synchronous Serial Card

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 3098 Series

32 Switched Relay Output ISA Card

2 options available

Sealevel 3096 Series

8-Channel Isolated Digital Input/8-Channel Reed Relay Output ISA Card

1 option available

Sealevel 3095 Series

16 Reed Relay Output ISA Card

2 options available

Sealevel 3094 Series

16 Optically Isolated Digital Input ISA Card – ISO-16

2 options available

Sealevel 3093 Series

16-Channel Isolated Digital Input/16-Channel Reed Relay Output ISA Card

1 option available

Sealevel 2833 Series

8 Port RS-232/422/485 (DB9) Serial to USB Adapter

1 option available

Sealevel 2823 Series

8 Port RS-232/422/485 (DB9) Serial to USB Adapter

From £521.00 (exc. VAT)

4 options available

Sealevel 2807 Series

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

From £435.50 (exc. VAT)

4 options available

Sealevel 2804 Series

8 Port RS-232 RJ45 Serial to USB Adapter

From £466.00 (exc. VAT)

1 option available

Sealevel 2803 Series

8 Port RS-232/422/485 (DB9) Serial to USB Adapter

From £524.00 (exc. VAT)

2 options available

Sealevel 2802 Series

8 Port RS-422/485 DB9 Serial to USB Adapter

From £503.50 (exc. VAT)

1 option available

Sealevel 2801 Series

8 Port RS-232 (DB9) Serial to USB Adapter

From £357.50 (exc. VAT)

1 option available

Sealevel 270U Series

7 Port Isolated Industrial USB 2.0 Hub

1 option available

Sealevel 2433 Series

4 Port RS-232/422/485 (DB9) Serial to USB Adapter

1 option available

Sealevel 2423 Series

4 Port RS-232/422/485 (DB9) Serial to USB Adapter

4 options available

Sealevel 2407 Series

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

From £335.50 (exc. VAT)

4 options available

Sealevel 2404 Series

4 Port RS-232 RJ45 Serial to USB Adapter

From £321.00 (exc. VAT)

1 option available

Sealevel 2403 Series

4 Port RS-232/422/485 (DB9) Serial to USB Adapter

From £387.00 (exc. VAT)

1 option available

Sealevel 2402 Series

4 Port RS-422/485 (DB9) Serial to USB Adapter

From £196.50 (exc. VAT)

1 option available

Sealevel 2401 Series

4 Port RS-232 (DB9) Serial to USB Adapter

From £184.00 (exc. VAT)

1 option available

Sealevel 2228 Series

2 Port RS-232/422/485 (DB9) Software Configurable Serial to USB Adapter Board – PC Bracket

From £173.00 (exc. VAT)

1 option available

Sealevel 2223-OEM Series

2 Port RS-232/422/485 (DB9) OEM Serial to USB Board

From £185.00 (exc. VAT)

2 options available

Sealevel 2223 Series

2 Port RS-232/422/485 DB9 Serial to USB Adapter

From £184.00 (exc. VAT)

1 option available

Sealevel 2213 Series

2 Port Isolated RS-232/422/485 (DB9) Serial to USB Adapter

From £297.00 (exc. VAT)

1 option available

Sealevel 2208 Series

2 Port RS-232 (DB9) Serial to USB Adapter Board – PC Bracket

From £140.50 (exc. VAT)

1 option available

Sealevel 2203 Series

2 Port RS-232/422/485 (DB9) Serial to USB Adapter

From £230.00 (exc. VAT)

2 options available

Sealevel 2202 Series

2 Port RS-422/485 DB9 Serial to USB Adapter

From £230.00 (exc. VAT)

1 option available

Sealevel 2201 Series

2 Port RS-232 (DB9) Serial to USB Adapter

From £149.50 (exc. VAT)

1 option available

Sealevel 2161 Series

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

1 option available

Sealevel 2128 Series

1 Port RS-232/422/485 (DB9) Software Configurable Serial to USB Adapter Board – PC Bracket

From £168.00 (exc. VAT)

1 option available

Sealevel 2123 Series

1 Port RS-232/422/485 (DB9) Serial to USB Adapter

From £169.00 (exc. VAT)

1 option available

Sealevel 2113 Series

1 Port Isolated RS-232/422/485 (DB9) Serial to USB Adapter

From £179.00 (exc. VAT)

1 option available

Sealevel 2108 Series

1 Port RS-232 (DB9) Serial to USB Adapter Board – PC Bracket

From £76.50 (exc. VAT)

1 option available

Sealevel 2107 Series

1 Port RS-485 (DB9) Serial to USB Adapter

From £93.00 (exc. VAT)

1 option available

Sealevel 2106 Series

1 Port RS-422 (DB9) Serial to USB Adapter

From £72.50 (exc. VAT)

1 option available

Sealevel 2105R Series

1 Port RS-232 (DB9) Serial to USB Adapter

From £90.00 (exc. VAT)

1 option available

Sealevel 2104 Series

1 Port Isolated RS-232/422/485 (DB25) Serial to USB Adapter

From £125.50 (exc. VAT)

1 option available

Sealevel 2102 Series

1 Port RS-422/485/530 (DB25) Serial to USB Adapter

From £159.00 (exc. VAT)

1 option available

Sealevel 2101 Series

1 Port RS-232 (DB25) Serial to USB Adapter

1 option available

Sealevel 170PoE Series

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

From £303.50 (exc. VAT)

1 option available

Sealevel 170PoE-OEM Series

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

From £303.50 (exc. VAT)

1 option available

Sealevel 170E-OEM Series

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

From £292.00 (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 160PoE-OEM Series

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

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 150PoE Series

Ethernet Modbus TCP to 4 Form C Relay Output Adapter

From £193.00 (exc. VAT)

Showing 360 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.