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How often should you replace hard wired smoke detectors? 

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This is critical in scenarios where traditional smoke detectors cannot be installed.
These characteristics of smoke detector usage and acquisition should be considered in targeting future intervention strategies.
The sensors are best for combination with other techniques, such as smoke detectors.
1 It is time for a similar comprehensive reevaluation of smoke detectors for home fire safety.
The results of these experiments show that the smoke detectors, especially the ionization detector, are sensitive to cooking fumes and nuisance alarms are easy to happen.
Alarm algorithms utilizing ionization detector smoke measurements proved to be more effective than measurements from photoelectric detectors.
The current alarm algorithm resulted in better overall performance than the commercial smoke detectors, by providing both improved nuisance source immunity with generally equivalent or faster response times.

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