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When should I replace my hardwired smoke detectors? 

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The sensors are best for combination with other techniques, such as smoke detectors.
These characteristics of smoke detector usage and acquisition should be considered in targeting future intervention strategies.
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.
This paper demonstrates the usability of gas sensor technologies for fire detection to enhance the performance of conventional smoke 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.
Alarm algorithms utilizing ionization detector smoke measurements proved to be more effective than measurements from photoelectric detectors.
However, the learning of smoke representation in the detectors will be restricted by the appearance gap between real and synthetic smoke samples, which will cause a significant performance drop.

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