Sealevel started with a great idea. In 1984, the founders of Sealevel Systems introduced the first IBM XT compatible RS-485 adapter. They went on to provide RS-232 and RS-485 adapters for ADAMS Inc., and officially founded Sealevel Systems, Inc. in 1986. Company Factoids Customer Success Stories Press Releases Career Center Driving Directions

Today, we provide communications and I/O solutions for multiple platforms including PCI Bus, USB, ISA Bus, PC Card (PCMCIA), and PC/104. Plus we've expanded our product line to include multi-port RS-232 and RS-422/485, high-speed Sync/Async, Digital / Relay I/O boards, and Solid State Disk emulation.

We also provide related software, technical support and customer service. If you have a unique application, we can give you a customized solution. Sealevel Systems, Inc. is in full compliance with FCC and CE requirements.