Founded in 1987, TSI is one of the premier integrators of low-voltage systems. The company offers audio-video presentation, security and access control, and fire and life safety system capabilities. It also provides voice over Internet protocol solutions to customers. TSI offers project management, remote monitoring, design and engineering services. In addition, the company provides mobile wireless and data networking solutions to customers. Its client list includes Clayco Construction, Edward Jones, KV Pharmaceutical Company, Graybar, Sigma Chemicals, Anheuser-Busch, St. Louis Public Schools, and Lindenwood and Washington Universities. The company additionally offers installation and security services. TSI maintains a location in St. Charles, Mo.