Over 40 years ago tii was founded as a lightning protection company. Based in Long Island, the company developed and produced industry leading products for lightning protection, powerline protection, and overvoltage surge protection.

As technology developments brought new challenges and needs to communication providers, tii expanded its products and solutions to meet those needs. Today we have grown to become a world class provider of NIDs, gateways and home networking products, overvoltage surge protection, and connectivity solutions for the communications industry. Through an extensive network of sales teams and distributors, our products are sold throughout North America, as well as Ireland, Australia, and Latin America.