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| Electronics > Security & Surveillance > Home Security Systems |
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| Product Description This unique, patented technology meetsNFPA 72 field sensitivity testing requirements without the need forexternal meters.Additional diagnostic information is activated by applying a magnetnear the detector's integral reed switch.The ESL 449/448 Series self-diagnostic, four-wire smoke detectorscontinually monitor their own sensitivity and operational status, andprovide a visual trouble indication if they drift out of sensitivity rangeor fail internal diagnostics. 449CSTE - Smoke Detector W/Heat Sensor, Sounder & Status Relay Shipping Weight: 1 pounds | ||||||||
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