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 120 of 426 Sealevel Products items

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OA5S
Sealevel OA5S
Single Point Discrete 120V AC Output Module
OA5Q
Sealevel OA5Q
Quad Solid State Relay: AC Output
DR105
Sealevel DR105
DIN Rail Mounting Clips
£15.50 (exc. VAT)
DR104
Sealevel DR104
DIN Rail Mounting Clips
£26.00 (exc. VAT)
DR103
Sealevel DR103
DIN Rail Mounting Clips
DR102
Sealevel DR102
DIN Rail Mounting Clips
£39.50 (exc. VAT)
CA539-ROHS
Sealevel CA539-ROHS
91cm USB Type A to USB Type B Device Cable
CA536-ROHS
Sealevel CA536-ROHS
130cm USB Type-A Extension Cable
CA490-ROHS
Sealevel CA490-ROHS
182cm DB78 Male to DB78 Male Extension Cable
CA429-ROHS
Sealevel CA429-ROHS
182cm R9 Serial Debug Cable
CA383-ROHS
Sealevel CA383-ROHS
35cm Internal USB Cable for 2mm Box Header Connectors
CA382-ROHS
Sealevel CA382-ROHS
35cm Internal USB Cable for Sealevel 2mm Molex Connectors
CA378-ROHS
Sealevel CA378-ROHS
100cm DB78M to DB37F Input / DB37M Output Cable
CA356-ROHS
Sealevel CA356-ROHS
182cm USB Type A to SeaLATCH USB Type B Device Cable
£19.50 (exc. VAT)
CA355-ROHS
Sealevel CA355-ROHS
182cm SeaLATCH USB Type A to USB Type B Device Cable
£19.50 (exc. VAT)
CA342-ROHS
Sealevel CA342-ROHS
24" USB Type A to Sealevel 2mm Molex Connector
CA339-ROHS
Sealevel CA339-ROHS
91cm Molex 100-Pin to 4x DB25M Cable
CA338-ROHS
Sealevel CA338-ROHS
76cm 40-Pin IDC Ribbon Cable to 2x DB25M Connectors
CA332-ROHS
Sealevel CA332-ROHS
182cm SeaLATCH USB Type A to SeaLATCH USB Type B Device Cable
£19.50 (exc. VAT)
CA321-ROHS
Sealevel CA321-ROHS
100cm 2x 26-Pin IDC to 50-Pin Edge Connector Ribbon Cable
CA273-ROHS
Sealevel CA273-ROHS
36cm 40-Pin IDC Ribbon Cable to 4x DB9M Connectors
CA260-ROHS
Sealevel CA260-ROHS
35cm Internal USB Cable for 2.54mm Box Header Connectors
CA251-ROHS
Sealevel CA251-ROHS
213cm CAT5 Crossover Cable Yellow
CA247-ROHS
Sealevel CA247-ROHS
300cm CAT5 Patch Cable Blue
CA246-ROHS
Sealevel CA246-ROHS
213 CAT5 Patch Cable: Blue
CA241-ROHS
Sealevel CA241-ROHS
DB9F to DB25M RS-232 Converter
CA239-ROHS
Sealevel CA239-ROHS
12cm RS-485 Interconnect Cable - for SeaI/O, Relio R1100 Systems
CA237-ROHS
Sealevel CA237-ROHS
DB78M to 2x IDC 50-Pin Ribbon Connectors;
CA233-ROHS
Sealevel CA233-ROHS
182cm DB78M to DB78F Extension Cable
CA231-ROHS
Sealevel CA231-ROHS
91cm Micro DB68 to 8 x DB9M Cable
CA222-ROHS
Sealevel CA222-ROHS
45cm 40-Pin IDC to 40-Pin IDC Ribbon IDE Cable
CA213-ROHS
Sealevel CA213-ROHS
274cm DB9F to DB9F Null Modem Cable
CA211-ROHS
Sealevel CA211-ROHS
15cm 40-Pin IDC Ribbon to DB37F Cable
CA206-ROHS
Sealevel CA206-ROHS
182cm DB44M to DB37M Cable
CA202-ROHS
Sealevel CA202-ROHS
91cm Micro DB68 to 8 x DB25M Cable
CA200-ROHS
Sealevel CA200-ROHS
91cm DB44M to 4 x DB9M Cable
CA199-ROHS
Sealevel CA199-ROHS
91cm DB44M to 4 x DB25M Cable
CA197-ROHS
Sealevel CA197-ROHS
45cm 50-Pin IDC to 50-Pin IDC Ribbon Cable
CA190-ROHS
Sealevel CA190-ROHS
182cm DB9F RS-422 to 207M SMPTE Cable
CA186-ROHS
Sealevel CA186-ROHS
182cm DB9F to Tinned Leads Cable
CA185-ROHS
Sealevel CA185-ROHS
182cm DB44M to DB44F Extension Cable
CA184-ROHS
Sealevel CA184-ROHS
182cm DB44M to 1x DB37F Input and 1 DB37M Output,
CA179-ROHS
Sealevel CA179-ROHS
182cm USB Type A to USB Type B - Device Cable
£15.50 (exc. VAT)
CA178-ROHS
Sealevel CA178-ROHS
182cm DB25F V.35 to ITU-T ISO-2593 Style Connector V.35 Cable
CA177-ROHS
Sealevel CA177-ROHS
182cm DB9F to DB25M Standard RS-232 Modem Cable
CA176-ROHS
Sealevel CA176-ROHS
25cm DB9F RS-422 to DB25M RS-530 Cable
CA174-ROHS
Sealevel CA174-ROHS
182cm DB25F to DB25M Twisted Pair Serial Cable
TB06-ROHS
Sealevel TB06-ROHS
Terminal Block: Dual DB9 Female to 18 Screw Terminals
TB05-ROHS
Sealevel TB05-ROHS
Terminal Block: DB9 Female to 9 Screw Terminals
TB04-ROHS
Sealevel TB04-ROHS
Terminal Block: DB25 Female to 25 Screw Terminals
TB04-KT-ROHS
Sealevel TB04-KT-ROHS
Terminal Block Kit: DB25 Female to 25 Screw Terminals
TB02-KT-ROHS
Sealevel TB02-KT-ROHS
Terminal Block Kit: DB37 Male and DB37 Female to 37 Screw Terminals
TB-SP9-KT
Sealevel TB-SP9-KT
Terminal Blocks: SeaI/O Spring Clamp Upgrade Kit
TB-SP06-10-ROHS
Sealevel TB-SP06-10-ROHS
Terminal Blocks: 6 Position Spring Clamp (10 Pack)
TB-SP04-10-ROHS
Sealevel TB-SP04-10-ROHS
Terminal Blocks: 4 Position Spring Clamp (10 Pack)
TB-SC9-KT-ROHS
Sealevel TB-SC9-KT-ROHS
Terminal Blocks: SeaI/O Screw Terminal Replacement Kit
TB-SC06-10-ROHS
1 in stock
Sealevel TB-SC06-10-ROHS
Terminal Blocks: 6 Position Screw Terminal (10 Pack)
TB-SC04-10-ROHS
Sealevel TB-SC04-10-ROHS
Terminal Blocks: 4 Position Screw Terminal (10 Pack)
TA01-ROHS
Sealevel TA01-ROHS
Terminal Block: 50-Pin Header - Relay Rack Simulation Module
SS-DB9-ROHS
Sealevel SS-DB9-ROHS
DB9 Female to DB9 Male - Serial Surge Suppressor
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Showing 120 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.