55000-064APO Conventional Flame Detector (UV/IR2) [SIL2]55000 064APO Conventional Flame Detector (UV IR2) [SIL2] The combination of UV and IR2 detection, plus signal processing allows the sensor to be used without risk of false alarms in difficult situations chracterised by factors such as flickering blackbody by radiation or arc welding. Key Features: Class 1 sensitivity to EN 54 10 detects 0. 1m2 fire at 25m High optical interference immunity Selectable response speed Optical self test Low power