Industries

Signal Service began in the small Sierra Nevada Mountain town of Murphys, California but over the past 45 years has expanded throughout all Northern California. We measure our success by the quality of our relationships and the service we provide our customers. Our professional team has years of experience, and as a family business, you still receive warm and friendly service. Our technicians live throughout our service territory to promptly respond to any service issue.

Counties we currently service: San Francisco, San Mateo, Sonoma, Marin, Napa, Yolo, Solano, Contra Costa, Alameda, Santa Clara, Stanislaus, San Joaquin, Sacramento, Sutter, Placer, El Dorado, Amador, Alpine, Calaveras, Tuolumne, Mariposa and Merced.

Local & Family Owned Business Since 1979

For home security, Signal Service provides all the options you need to protect your property and stay safe. We understand how important it is to protect the ones you love, which is why we offer reliable solutions and friendly, knowledgeable service. From burglar alarms and fire alarms to heat, smoke, and carbon monoxide detectors, we do it all. With CCTV surveillance and video service, you can monitor your home 24/7 no matter where you are. Call Signal Service today to learn more about our home security solutions—including Video Service!

Signal Service provides business and commercial security systems throughout Northern California. Family owned and operated since 1976, we’re dedicated to ensuring your business is protected. We install and repair security systems, including burglar and fire alarms, access control, and camera systems in all of Northern California. Talk to one of our security professionals today!

Signal Service is proud to also serve government clients. We have maintained numerous government contracts for years, demonstrating our dedication to lifetime service. We are a certified California Small Business and has experience working with city, county, state and federal government agencies. We will partner with you to ensure the contract process is completed efficiently and to all government standards and requirements.

Hospitals, clinics, nursing homes and assisted living facilities require extensive and comprehensive Fire and Burglar Alarm, Access Control, Camera and Temperature Supervision Systems. Signal Service has years of experience working with Health Care Professionals to develop, install, service, and inspect all types of systems. We are involved from start to finish on all jobs and will ensure your project is completed to the highest industry standards.