58000-600SIL Discovery Optical Smoke Detector [SIL2]58000 600SIL Disovery Optical Smoke Detector [SIL2] The Discovery Optical Smoke Detector are high specification devices using the light scatter principle to quickly detect fire while effectively managing false alarms. Key Features: Reliable fire detection in areas with a very wide temperature range from 40C to +70C Five operating modes suitable for a range of applications where unique response behaviour is required Drift compensation to ensure