If you’re an electrical contractor, rely on Mayo & Associates, Inc. for the fire alarm system and other building system equipment that you need to install for your customers. Serving Chesterfield, We have provided wholesale quality fire alarm system equipment for schools, churches, and commercial and industrial buildings since 1981. After installation, we provide the necessary inspections and service. Maintenance and service contracts are available after the warranty. Twenty-four hour monitoring service is also available for your clients. For more information, call today!