Signal Service provides business and home security systems throughout the Sierra foothills, Sacramento Valley and Gold Country. Family owned and operated since 1976, we're dedicated to connecting individuals to the services they need to be protected at home or at work. We install and repair security systems, including burglar alarms and fire alarms, in cities like El Dorado Hills, Jackson and Sonora—as well as many others. When you need total home and business security, it's time to call Signal Service!