San Antonio’s best home & business security company, Alert 360 started as a small installation and alarm monitoring business in 1973. We have grown to be the largest home & business security providers in the nation! Our state-of-the-art home security system technology is available to all homes and businesses in the San Antonio area! We specialize in wired and wireless security cameras, and 24/7 live video and alarm monitoring. Thousands of San Antonio homeowners and businesses already rely on Alert 360 alarm systems to protect their families and property. When you see our round green yard signs, you know there are 360 degrees of security surrounding the home or business.