The best integrated package of surveillance, access management and fire safety systems allows cross-sector central management systems to be combined with environmental sensors, such as video surveillance with the conventional fire safety systems and access management systems seamlessly; activating the entire system with pre-warning. This allows higher situational awareness and prompt contingency measures in time when an unsafe incident occurs to avoid increased losses. At the same time, it can eliminate the risk of relying on single device or human evaluations, reducing the need for security staff to physically go to the site to handle the situation, thus effectively reducing operation and management costs. This allows private surveillance and public disaster warning systems to be integrated more closely.