Sealevel PC/104 “Portholes” kits offer a standardized method for interfacing real-world I/O connections. The I/O kits can be installed in Relio R2000 and R3000 systems and are perfect for embedded systems. Simply design our 3.2″ x 3.1″ “Portholes” into your enclosure to mix and match PC/104 I/O kits for maximum configurability.

Sealevel Portholes are available in extended temperature versions (-40°C – +85°C).

  • Design our 3.2
  • Mix and match PC/104 I/O kits for maximum configurability
  • PC/104 boards available with serial, digital, and analog I/O interfaces
  • Custom porthole designs available as an option

Sealevel Systems, Inc. provides innovative hardware and software products enabling computer connectivity and control. Since 1986, we have manufactured Serial and Digital I/O products to serve our customers' interface requirements. Whether you're looking for synchronous or asynchronous serial, analog or digital I/O, industrial computers or touchscreen HMI systems, Sealevel has a solution. Our commitment to customer satisfaction is expressed by our ISO 9001:2000 registration and the Lifetime Warranty that is standard with all Sealevel manufactured I/O products. Currently, we offer over 300 standard RS-232, RS-422, and RS-485 serial and digital I/O devices for multiple interfaces including USB, Ethernet, PCI, PC/104, PCMCIA, ISA, and serial converters. Our Relio® industrial computers and embedded I/O servers offer solid-state reliability and the highest degree of scalable I/O expansion. We have expanded our product line to include SeaI/O® data acquisition modules, SeaPAC® industrial touchscreen HMI systems, and OEM boards.



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