The ZX SensorLaser Plus is a linear heat detector that uses optical fibre as a sensor, through which the evaluation unit passes laser pulse signals. The temperature profile is determined along the fibre from back-scattered signals, with a resolution of 2-4 m on a fibre lenght of up to 8 km. As such, the system is ideal for particularly long (tunnels, cable lines, conveyor belts) or large facilities (cool stores, multi-storey car parks), as well as a range of inaccessible areas (false floors, tanks). Even under extreme conditions, the ZX SensorLaser Plus delivers precise information about fire location, extension and spread. This information can be transferred to fire alarm or management systems.