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The 429CST Series self-diagnostic, Four-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. They meet NFPA 72 field sensitivity testing requirements without the need for external meters.
Features:
Intelligent, self-diagnostic *
Field-replaceable optical chamber *
Low-profile design *
Plug-in terminal block *
Advanced false alarm immunity *
12VDC and 24VDC operation *
Includes sounder, heat sensor.
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