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Sound and Signal, Incorporated (SSI) located in Northern California specializes in integrated communications systems and low voltage solutions. Industry leaders since 1986, Sound and Signal, Inc. continues to provide excellent service to its customers before, during and at the conclusion of a project. With a commitment to schools, architects and engineers, Sound and Signal Inc. ensures reliable systems, trouble free installations and years of dependable operation. With multiple offices strategically located throughout Northern California, we provide immediate service and support for all of customers’ needs.