Sealevel Systems, Inc., provides innovative, reliable hardware and software products to enable computer connectivity and control. Sealevel manufactures more than 300 standard I/O products with ISO 9001: 2000 registration and a standard lifetime warranty. The company’s products include industrial computing solutions in addition to a variety of communications and I/O products including PCIe and PCI bus boards, Ethernet serial servers, and USB serial adapters.

Sealevel industrial computers and HMIs are designed for I/O intensive applications where ruggedness, reliability and configurability are a must. Asynchronous and synchronous serial interfaces are perfect for high-speed applications and support RS-232, RS-422, RS-485, and RS-530 electrical interface standards. Sealevel's wide variety of I/O devices provide field-proven optically isolated inputs, Reed and Form C relay outputs, TTL interfaces that connect to solid-state relays, A/D, and D/A functionality. The  wide range of Sealevel accessories provides one-stop shopping for all of your serial and digital I/O application requirements.