449CT – ESL Smoke/Heat Detector

449CT Smoke Detector (Self-Diagnostic, Photoelectric, 4-Wire with Heat Sensor) The 400 Series self-diagnostic, 4 wire smoke detectors continually monitor their own sensitivity and operational status, and provide a visual trouble indication if they drift out of sensitivity range or fail internal diagnostics. This meets NFPA 72 field sensitivity testing requirements without the need for external meters. Additional diagnostic information is activated by applying a magnet near the detector's integral reed switch. This initiates a self-diagnostic routine and provides visual indication of sensitivity level, or if service is required. The 400 Series is easily cleaned by simply replacing ESL's proprietary field-replaceable optical chamber (part 211). All models are designed to reduce more »