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
Sealevel Products

Showing 60 of 428 Sealevel Products items

Filter your results
Clear Filters
  • Availability
  • Category
  • Bus
  • Protocol
  • Video Outputs
  • Transmission type
  • USB
      • to
  • Ethernet
  • Serial Interface
  • Processor
  • Serial
      • to
  • Mounting Options
  • I/O Type
160PoE-OEM
Sealevel 160PoE-OEM
Ethernet Modbus TCP to 32 Channel TTL Digital I/O Board
462M-OEM
Sealevel 462M-OEM
RS-485 Modbus RTU to 96 Channel TTL DB78F Digital I/O OEM Board
160E-OEM
Sealevel 160E-OEM
Ethernet Modbus TCP to 32 Channel TTL Digital I/O Board
430E-OEM
Sealevel 430E-OEM
Ethernet Modbus TCP to 32 Isolated Digital Input OEM Board
430M-OEM
Sealevel 430M-OEM
RS-232 Modbus RTU to 32 Isolated Digital Input OEM Board
HUB7i-UK
Sealevel HUB7i-UK
7 Port Isolated Industrial USB 2.0 Hub
HUB7M-UK
Sealevel HUB7M-UK
7 Port Industrial USB 2.0 Hub
HUB7P-UK
Sealevel HUB7P-UK
7 Port Industrial USB 2.0 Hub
HUB4PH-UK
Sealevel HUB4PH-UK
4 Port Industrial USB 2.0 Hub
270U
Sealevel 270U
7 Port Isolated Industrial USB 2.0 Hub
ISO-1-OEM
Sealevel ISO-1-OEM
1 Port SeaISO Embedded Inline USB Isolator
ISO-1
Sealevel ISO-1
1 Port SeaISO Inline USB Isolator
ISO-1R
Sealevel ISO-1R
1 Port SeaISO Ruggedised Inline USB Isolator Cable
462M
Sealevel 462M
RS-485 Modbus RTU to 96 Channel TTL DB78F Digital I/O Adapter
£324.00
KT106-ROHS
Sealevel KT106-ROHS
Terminal Block Kit: TB06 + (2) CA127 Cables
£94.00
KT105-ROHS
Sealevel KT105-ROHS
Terminal Block Kit: TB05 + CA127 Cable
£70.50
KT107-ROHS
Sealevel KT107-ROHS
Terminal Block Kit: TB07 + CA167 Cable
£111.00
462S
Sealevel 462S
RS-232 Modbus RTU to 96 Channel TTL DB78F Digital I/O Adapter
£368.00
TB34-ROHS
Sealevel TB34-ROHS
Terminal Block: DB9 Female to 5 Screw Terminals (RS-422/485)
£20.50
RJ25P-232-ROHS
Sealevel RJ25P-232-ROHS
DB25 Male to RJ45 - Preconfigured for RS-232 RJ45 Serial Devices
£14.50
RJ9P-232-ROHS
Sealevel RJ9P-232-ROHS
DB9 Male to RJ45 - Preconfigured for RS-232 RJ45 Serial Devices
£14.50
CA135-ROHS
Sealevel CA135-ROHS
100cm 50-Pin IDC to 50-Pin Edge Connector Ribbon Cable
£52.50
CA167-ROHS
Sealevel CA167-ROHS
100cm 50-Pin IDC to 50-Pin IDC Ribbon Cable
£20.50
KT101-ROHS
Sealevel KT101-ROHS
Terminal Block Kit: TB02 + CA112 Cable
£120.50
CA356-ROHS
Sealevel CA356-ROHS
182cm USB Type A to SeaLATCH USB Type B Device Cable
£19.50
2807
Sealevel 2807
8 Port RS-232/485 RJ45 Versacom Serial to USB Adapter
£435.50
2804
Sealevel 2804
8 Port RS-232 RJ45 Serial to USB Adapter
£466.00
410W
Sealevel 410W
Wireless 802.11b/g Modbus TCP to 16 Isolated Digital Input/16 Reed Relay Output Adapter
£353.50
570W
Sealevel 570W
Wireless 802.11b/g Modbus TCP to 8 Analog Input – 8 Isolated Digital Input/8 Form C Relay Output Adapter
£502.00
462N
Sealevel 462N
96 Channel TTL DB78 Digital Interface SeaI/O Expansion Module
£313.50
450E
Sealevel 450E
Ethernet Modbus TCP to 16 Form C Relay Output Adapter
£353.50
450W
Sealevel 450W
Wireless 802.11b/g Modbus TCP to 16 Form C Relay Output Adapter
£378.00
530M-OEM
Sealevel 530M-OEM
RS-485 Modbus RTU to 16 Isolated Digital Input/16 Open-Collector Output OEM Board
£415.00
440M-OEM
Sealevel 440M-OEM
RS-485 Modbus RTU to 32 Reed Relay Output OEM Board
£291.00
530S-OEM
Sealevel 530S-OEM
RS-232 Modbus RTU to 16 Isolated Digital Input/16 Open-Collector Output OEM Board
£415.00
530W
Sealevel 530W
Wireless 802.11b/g Modbus TCP to 16 Isolated Digital Input/16 Open-Collector Output Adapter
£526.50
540M
Sealevel 540M
RS-485 Modbus RTU to 32 Open-Collector Output Adapter
£378.00
440S-OEM
Sealevel 440S-OEM
RS-232 Modbus RTU to 32 Reed Relay Output OEM Board
£291.00
462E
Sealevel 462E
Ethernet Modbus TCP to 96 Channel TTL DB78F Digital I/O Adapter
£409.00
KT108-ROHS
Sealevel KT108-ROHS
Terminal Block Kit: TB08-KT + CA185 Cable
£110.00
KT109-ROHS
Sealevel KT109-ROHS
Terminal Block Kit: (2) TB02 + CA184 Cable
£267.50
KT111-ROHS
Sealevel KT111-ROHS
Terminal Block Kit: TB02 + CA206 Cable
£114.50
CA332-ROHS
Sealevel CA332-ROHS
182cm SeaLATCH USB Type A to SeaLATCH USB Type B Device Cable
£19.50
CA355-ROHS
Sealevel CA355-ROHS
182cm SeaLATCH USB Type A to USB Type B Device Cable
£19.50
CA179-ROHS
Sealevel CA179-ROHS
182cm USB Type A to USB Type B - Device Cable
£15.50
2802
Sealevel 2802
8 Port RS-422/485 DB9 Serial to USB Adapter
£503.50
2213
Sealevel 2213
2 Port Isolated RS-232/422/485 (DB9) Serial to USB Adapter
£297.00
2102
Sealevel 2102
1 Port RS-422/485/530 (DB25) Serial to USB Adapter
£159.00
KT104-ROHS
Sealevel KT104-ROHS
Terminal Block Kit: TB04 + CA104 Cable
£107.00
470E-OEM
Sealevel 470E-OEM
Ethernet Modbus TCP to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output OEM Board
£526.50
470W
Sealevel 470W
Wireless 802.11b/g Modbus TCP to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output Adapter
£563.50
520W
Sealevel 520W
Wireless 802.11b/g Modbus TCP to 8 Isolated Digital Input/8 High Current Form C Relay Output Adapter
£378.00
120PoE-OEM
Sealevel 120PoE-OEM
PoE Modbus TCP to 4 Optically Isolated Digital Input/4 Form C Relay Output Board
£244.50
440N
Sealevel 440N
32 Reed Relay Output SeaI/O Expansion Module – board only
£291.00
440E
Sealevel 440E
Ethernet Modbus TCP to 32 Reed Relay Output Adapter
£378.00
540W
Sealevel 540W
Wireless 802.11b/g Modbus TCP to 32 Open-Collector Output Adapter
£477.50
463E-OEM
Sealevel 463E-OEM
Ethernet Modbus TCP to 96 Channel TTL Digital I/O OEM Board
£332.00
540E-OEM
Sealevel 540E-OEM
Ethernet Modbus TCP to 32 Open-Collector Output OEM Board
£439.50
530E
Sealevel 530E
Ethernet Modbus TCP to 16 Isolated Digital Input/16 Open-Collector Output Adapter
£502.00
540S
Sealevel 540S
RS-232 Modbus RTU to 32 Open-Collector Output Adapter
£378.00
Load More

Showing 60 of 428

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.