Transcription: The smoke detector is becoming more and more popular in everyday homes as an early warning system against fire. A few years ago, smoke detectors were too expensive to have installed in the home and as a result many lives were lost because individuals were overcome by smoke in their sleep. Nowadays there are many cheap and effective battery-operated smoke alarms available to consumers. These are simply screwed in, in a convenient place and are ready to operate. Amazingly, smoke detectors are capable of differentiating between different types of smoke, allowing them to be fitted in the vicinity ...
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