Expanding the Boundaries of Security. Visonic is an international developer and manufacturer of high-quality electronic security systems and components. We are dedicated to enhancing people’s way of life by increasing their sense of security. Our easy-to-use and innovative Home Security Systems and components and Personal Emergency Response systems are vital parts of everyday family life for people of every age. By providing real-time connectivity between families, homes, property, care givers and community support networks, we empower people to pursue their daily lives with full confidence that the people and things they care most about are safe and comfortable.