About Us

David Johnson, President

David Johnson, President

Modern Voltage Employees

Modern Voltage Employees

We are a Full Service Electric Instrumentation and Electrical Control Company. Our professional staff has over 100 years of combined experience.

We are an Employee Owned and Operated Company and offer 24/7 service. Feel free to call us if you have an emergency, otherwise, please use our navigation menu below to get to the page for the service or product you need.

Our Facility is located in Charleston South Carolina.

Modern Voltage
1910 Morgan Ave
Charleston, SC 29406
Phone (843) 478-7779