Flame detectors are effective in protecting areas where flaming fires may be expected. There is a choice of detection techniques - Ultra Violet and Infra-red, or a combination of both. UV Flame Detectors are generally used in engine rooms, factories and warehouse applications. Infra-red Flame Detectors are able to tolerate dirtier environments which may block UV radiation and are generally used in applications such as waste handling, colour printing and paper manufacturing.