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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Sealevel Products

Showing 420 of 426 Sealevel Products items

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8126
1 option available
Sealevel 8126 Series
USB to 32 Channel TTL Digital I/O Adapter
8005
1 option available
Sealevel 8005 Series
48-ch TTL Digital I/O PCI Card
From £392.00 (exc. VAT)
7108
2 options available
Sealevel 7108 Series
1 Port RS-232/422/485 Isolated Low Profile PCI Serial Card
From £636.00 (exc. VAT)
520N
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)
462U
2 options available
Sealevel 462U Series
USB Modbus RTU to 96 Channel TTL – DB78F Digital I/O Adapter – SeaI/O-462U
PS102-ROHS
Sealevel PS102-ROHS
15W Industrial DIN-rail Power Supply
PS103-ROHS
Sealevel PS103-ROHS
60W Industrial DIN-rail Power Supply
PS106-ROHS
Sealevel PS106-ROHS
75W Industrial DIN-Rail Power Supply
PS101-ROHS
Sealevel PS101-ROHS
7.5W Industrial DIN-rail Power Supply
CA246-ROHS
Sealevel CA246-ROHS
213 CAT5 Patch Cable: Blue
CA247-ROHS
Sealevel CA247-ROHS
300cm CAT5 Patch Cable Blue
CA251-ROHS
Sealevel CA251-ROHS
213cm CAT5 Crossover Cable Yellow
4101
1 option available
Sealevel 4101 Series
1 Port RS-232 Ethernet Serial Device Server
4104
1 option available
Sealevel 4104 Series
1 Port RS-232/422/485 Ethernet Serial Device Server
4161
1 option available
Sealevel 4161 Series
16 Port RS-232 Ethernet Serial Device Server
4162
1 option available
Sealevel 4162 Series
16 Port RS-422/485 Ethernet Serial Device Server
4163
1 option available
Sealevel 4163 Series
16 Port RS-232/422/485 Ethernet Serial Device Server
4801
1 option available
Sealevel 4801 Series
8 Port RS-232 Ethernet Serial Device Server
4802
2 options available
Sealevel 4802 Series
8 Port RS-422/485 Ethernet Serial Device Server
4201
1 option available
Sealevel 4201 Series
2 Port RS-232 Ethernet Serial Device Server
4202
2 options available
Sealevel 4202 Series
2 Port RS-422/485 Ethernet Serial Device Server,
4203
1 option available
Sealevel 4203 Series
2 Port RS-232/422/485 Ethernet Serial Device Server
4401
1 option available
Sealevel 4401 Series
4 Port RS-232 Ethernet Serial Device Server
4402
2 options available
Sealevel 4402 Series
4 Port RS-422/485 Ethernet Serial Device Server
4403
1 option available
Sealevel 4403 Series
4 Port RS-232/422/485 Ethernet Serial Device Server
4102
2 options available
Sealevel 4102 Series
1 Port RS-422/485 Ethernet Serial Device Server
4103
1 option available
Sealevel 4103 Series
1 Port Isolated RS-232/422/485 Ethernet Serial Device Server
4803
1 option available
Sealevel 4803 Series
8 Port RS-232/422/485 Ethernet Serial Device Server
2113
1 option available
Sealevel 2113 Series
1 Port Isolated RS-232/422/485 (DB9) Serial to USB Adapter
From £179.00 (exc. VAT)
2123
1 option available
Sealevel 2123 Series
1 Port RS-232/422/485 (DB9) Serial to USB Adapter
From £169.00 (exc. VAT)
2128
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)
2161
1 option available
Sealevel 2161 Series
16 Port RS-232 (RJ45) Serial to USB Adapter
2101
1 option available
Sealevel 2101 Series
1 Port RS-232 (DB25) Serial to USB Adapter
2102
1 option available
Sealevel 2102 Series
1 Port RS-422/485/530 (DB25) Serial to USB Adapter
From £159.00 (exc. VAT)
2106
1 option available
Sealevel 2106 Series
1 Port RS-422 (DB9) Serial to USB Adapter
From £72.50 (exc. VAT)
2107
1 option available
Sealevel 2107 Series
1 Port RS-485 (DB9) Serial to USB Adapter
From £93.00 (exc. VAT)
2108
1 option available
Sealevel 2108 Series
1 Port RS-232 (DB9) Serial to USB Adapter Board – PC Bracket
From £76.50 (exc. VAT)
2103
1 option available
Sealevel 2103 Series
1 Port Isolated RS-232 (DB25) Serial to USB Adapter
From £114.00 (exc. VAT)
2104
1 option available
Sealevel 2104 Series
1 Port Isolated RS-232/422/485 (DB25) Serial to USB Adapter
From £125.50 (exc. VAT)
2105R
1 option available
Sealevel 2105R Series
1 Port RS-232 (DB9) Serial to USB Adapter
From £90.00 (exc. VAT)
2833
1 option available
Sealevel 2833 Series
8 Port RS-232/422/485 (DB9) Serial to USB Adapter
2803
1 option available
Sealevel 2803 Series
8 Port RS-232/422/485 (DB9) Serial to USB Adapter
From £524.00 (exc. VAT)
2804
4 options available
Sealevel 2804 Series
8 Port RS-232 RJ45 Serial to USB Adapter
From £466.00 (exc. VAT)
2807
4 options available
Sealevel 2807 Series
8 Port RS-232/485 RJ45 Versacom Serial to USB Adapter
From £435.50 (exc. VAT)
2203
1 option available
Sealevel 2203 Series
2 Port RS-232/422/485 (DB9) Serial to USB Adapter
From £230.00 (exc. VAT)
2208
1 option available
Sealevel 2208 Series
2 Port RS-232 (DB9) Serial to USB Adapter Board – PC Bracket
From £140.50 (exc. VAT)
2213
1 option available
Sealevel 2213 Series
2 Port Isolated RS-232/422/485 (DB9) Serial to USB Adapter
From £297.00 (exc. VAT)
2223
2 options available
Sealevel 2223 Series
2 Port RS-232/422/485 DB9 Serial to USB Adapter
From £184.00 (exc. VAT)
2402
1 option available
Sealevel 2402 Series
4 Port RS-422/485 (DB9) Serial to USB Adapter
From £196.50 (exc. VAT)
2403
1 option available
Sealevel 2403 Series
4 Port RS-232/422/485 (DB9) Serial to USB Adapter
From £387.00 (exc. VAT)
2404
4 options available
Sealevel 2404 Series
4 Port RS-232 RJ45 Serial to USB Adapter
From £321.00 (exc. VAT)
2433
1 option available
Sealevel 2433 Series
4 Port RS-232/422/485 (DB9) Serial to USB Adapter
2801
1 option available
Sealevel 2801 Series
8 Port RS-232 (DB9) Serial to USB Adapter
From £357.50 (exc. VAT)
2802
2 options available
Sealevel 2802 Series
8 Port RS-422/485 DB9 Serial to USB Adapter
From £503.50 (exc. VAT)
2407
4 options available
Sealevel 2407 Series
4 Port RS-232/485 RJ45 Versacom Serial to USB Adapter
From £335.50 (exc. VAT)
2423
1 option available
Sealevel 2423 Series
4 Port RS-232/422/485 (DB9) Serial to USB Adapter
2223-OEM
1 option available
Sealevel 2223-OEM Series
2 Port RS-232/422/485 (DB9) OEM Serial to USB Board
From £185.00 (exc. VAT)
2228
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)
2401
1 option available
Sealevel 2401 Series
4 Port RS-232 (DB9) Serial to USB Adapter
From £184.00 (exc. VAT)
2201
1 option available
Sealevel 2201 Series
2 Port RS-232 (DB9) Serial to USB Adapter
From £149.50 (exc. VAT)
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Showing 420 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.