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System Sensor Europe has introduced a Photo-Thermal Infra-Red (PTIR) device to its range of fire detectors. Previously, the most reliable technology available to detect rapid flaming fires was the ionisation detector, however the radiation it contains makes it both costly to manufacture and hazardous to dispose of. The PTIR consists of independent photoelectric, thermal and infrared sensors, controlled by algorithms running on an embedded processor. It is said to be the equal of the ionisation device in detecting rapid fires, whilst being both cost effective and environmentally friendly.