Protection 1 provides the best local home security alarm monitoring, home security and automation systems, and a variety of other security services including wireless security cameras, fire, smoke and heat detection, carbon monoxide alarms all backed by local service and support. We proudly provide 24 hour live customer service to thousands of homes and local businesses throughout the San Francisco area and nearby cities. Our team of security professionals includes over 2,500 professional installers, experienced service technicians and knowledgeable customer service members providing the best home security and business security solutions available. As the nation's largest full service security company, we provide the home security San Francisco, CA residents rely on 24 hours a day.