Please note that we will be closed for the holiday period starting from 24th December, and will reopen on 2nd January 2026. Our last shipping dates to customers this year will be - UK Mainland: 22/12/2025. Highlands/2-day carriage: 18/12/2025. FedEx Priority: 16/12/2025. FedEx Economy: 15/12/2025.

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 60 of 427 Sealevel Products items

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Sealevel 6510-ROHS

SeaRAQ 8x Channel-to-Channel Isolated A/D Inputs Expansion Module

Sealevel 8521-ROHS

SeaRAQ 8x Isolated Form A Relay Outputs Expansion Module

Sealevel 8520-ROHS

SeaRAQ 16x Isolated Form A Relay Outputs Expansion Module

Sealevel 8511-ROHS

SeaRAQ 16x Isolated Digital Inputs (0V to 132V AC) Expansion Module

Sealevel 8510-ROHS

SeaRAQ 16x Isolated Digital Inputs (3V to 30V DC) Expansion Module

Sealevel 8113-KT

USB to 4 Isolated Digital Input Adapter Kit (SeaDAC Lite ISO-4 Kit)

Sealevel 6520-ROHS

SeaRAQ 8x Channel Isolated 4-20 mA Current Loop Transmitter Outputs Expansion Module

Sealevel 6512-ROHS

SeaRAQ 6x Isolated Thermocouple Inputs (Type E, J, or K) Expansion Module

Sealevel 6511-ROHS

SeaRAQ 6x Isolated RTD Analog Inputs Expansion Module

Sealevel CA167-ROHS

100cm 50-Pin IDC to 50-Pin IDC Ribbon Cable

£20.50 (exc. VAT)

Sealevel CA159-ROHS

182cm DB25F RS-530 to DB15 Male X.21 Cable

Sealevel CA152-ROHS

20cm 10-Pin IDC Ribbon Cable to DB9M

Sealevel CA143-ROHS

91cm DB37F to 4x DB9M Cable

Sealevel CA140-ROHS

DB25F to DB9M RS-232 Converter

Sealevel CA135-ROHS

100cm 50-Pin IDC to 50-Pin Edge Connector Ribbon Cable

£52.50 (exc. VAT)

Sealevel CA127-ROHS

182cm DB9F to DB9M Extension Cable

Sealevel CA118-ROHS

20cm 26-Pin IDC Ribbon to DB25M Cable

Sealevel CA112-ROHS

182cm DB37M to DB37F Extension Cable

Sealevel CA110-ROHS

15cm 40-Pin IDC Ribbon Cable to DB37M

Sealevel CA107-ROHS

25cm DB25F RS-530 to DB37M RS-449 DTE Cable

Sealevel CA104-ROHS

182cm DB25F to DB25M Extension Cable

Sealevel 4220-ROHS

2-Port Ethernet Surge Suppressor

Sealevel RK2U

2U 19" Rack Tray

Sealevel RK1U

1U 19"; Rack Tray

Sealevel RJ9S8-ROHS

DB9 Female to RJ45 Modular Adapter

Sealevel RJ9P8-ROHS

DB9 Male to RJ45 Modular Adapter

Sealevel RJ9P-232-ROHS

DB9 Male to RJ45 - Preconfigured for RS-232 RJ45 Serial Devices

£14.50 (exc. VAT)

Sealevel RJ25S8-ROHS

DB25 Female to RJ45 Modular Adapter

Sealevel RJ25S8-2-ROHS

DB25 Female to (2) RJ45 Modular Adapter

Sealevel RJ25P8-ROHS

DB25 Male to RJ45 Modular Adapter

Sealevel RJ25P-232-ROHS

DB25 Male to RJ45 - Preconfigured for RS-232 RJ45 Serial Devices

£14.50 (exc. VAT)

Sealevel KT131

Flush Mounting Bracket Kit

Sealevel KT130

SeaI/O and Relio R1000 Side Mount Bracket

Sealevel KT125

Universal Mounting Bracket (VESA) - for SeaI/O, Relio R1000 Systems

Sealevel KT123

Flush Mount Bracket Kit - for SeaI/O, Relio R1000 Systems

Sealevel KT122

Expansion and Strap Kit - for SeaI/O, Relio R1100 Systems

Sealevel KT111-ROHS

Terminal Block Kit: TB02 + CA206 Cable

£114.50 (exc. VAT)

Sealevel KT109-ROHS

Terminal Block Kit: (2) TB02 + CA184 Cable

£267.50 (exc. VAT)

Sealevel KT108-ROHS

Terminal Block Kit: TB08-KT + CA185 Cable

£110.00 (exc. VAT)

Sealevel KT107-ROHS

Terminal Block Kit: TB07 + CA167 Cable

£111.00 (exc. VAT)

Sealevel KT106-ROHS

Terminal Block Kit: TB06 + (2) CA127 Cables

£94.00 (exc. VAT)

Sealevel KT105-ROHS

Terminal Block Kit: TB05 + CA127 Cable

£70.50 (exc. VAT)

Sealevel KT104-ROHS

Terminal Block Kit: TB04 + CA104 Cable

£107.00 (exc. VAT)

Sealevel KT101-ROHS

Terminal Block Kit: TB02 + CA112 Cable

£120.50 (exc. VAT)

Sealevel IN5S

Single Point Discrete AC/DC Input Module

Sealevel IB5S

Single Point Discrete 24V DC Input Module

Sealevel IB5Q

Quad Solid State Relay: DC Input

Sealevel IA5S

Single Point Discrete 120V AC/DC Input Module

Sealevel IA5Q

Quad Solid State Relay: AC Input

Sealevel PS106-ROHS

75WIndustrial DIN-Rail Power Supply

Sealevel PS105-ROHS

165W

Sealevel PS103-ROHS

60W Industrial DIN-rail Power Supply

Sealevel PS102-ROHS

15W Industrial DIN-rail Power Supply

Sealevel PS101-ROHS

7.5W Industrial DIN-rail Power Supply

Sealevel PH104-ROHS

PC/104 Multipurpose Adapter

Sealevel PB24HS

Discrete 24-Position Relay Rack

Sealevel PB24HQ

Quad 6-Position 24-Channel Relay Rack

Sealevel PB16HS

Discrete 16-Position Relay Rack

Sealevel OB5S

Single Point Discrete 24V DC Output Module

Sealevel OB5Q

Quad Solid State Relay: DC Output

Showing 60 of 427

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.