NOTIFIER of Northford, Connecticut, now offers video smoke detection (VSD) as part of its comprehensive line of fire and smoke detection products and technologies through an agreement with D-Tec of Hampshire, United Kingdom. VSD is based on the computer analysis of video images provided by standard CCTV cameras. It uses software algorithms to automatically identify the specific motion pattern of smoke and fire while ignoring other on-screen movement patterns from up to four cameras simultaneously. When fire or smoke is detected, the system alerts the operator both at the operating terminal and at an unlimited number of remote locations. It is useful where traditional smoke detection technologies are impractical, such as large open areas and rooms with high ceilings and high airflows.