DRD-E Conventional Infra Red Flame Detector Ivory (Single IR)DRD E Conventional Infra Red Flame Detector Ivory (Single IR) The DRD E is a flame detector designed for internal use to detect large flames. The detector fits any of the CDX range of mounting bases. The detection zone is a 90 cone and the detection range is up to and including 25 m DRD E Product Specification Features Class 1 performance as defined in BS EN54 10: 2002 (range up to 25m) Single IR technology Robust and slim design Low current