Martin Systems, Inc. is a Wisconsin based systems integrator specializing in integrated security, fire protection, and life s ... afety. Martin Systems was established in 1974 and has earned a reputation as an innovator and pioneer. Now in its Second-Generation, Martin Systems has grown to become one of the largest independent security alarm companies in Wisconsin with over 15,000 alarm customers. Headquartered in Green Bay, WI, Martin Systems services and installs integrated security, fire protection, and life safety systems throughout Wisconsin, Illinois, Minnesota, and Michigan’s Upper Peninsula. Branch Locations Green Bay, WI Madison, WI Milwaukee, WI Oshkosh, WI Door County, WI Call us at 1-800-640-3130. read more