This product includes technology covered by one or more of the following patents and may in addition have U.S. or foreign patents pending. U.S.Patents: US 5,440,749; US 5,530,890; US 5,659,703; US 5,784,584. Foreign Patents: DE 0,786,730; EP 0,786,730; FR 0,786,730; IT 0,786,730; NL 0,786,730; GB 0,786,730; JP 2,966,085; EP 0,870,226; IE 0 870,226; GB 0,870,226.
http://www.intellasys.net/products/seaforth/PDFs/SEAforth24A_PB112007.pdf