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Second, some have noted that, in many of the studies, there may be issues with selection bias since the introduction of CCTV was potentially endogenous to previous crime trends.
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To test effectiveness, we sprayed test smoke from an aerosol can directly at each device and timed how long it took the alarm to sound.
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advantage just in case their whole instantly dispersed perhaps it will reduce the gear.
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The losing team should be taking risks in terms of plays, unless a coach should "hunker down" to avoid losing by more than a few touchdowns, thus improving his or her resume'.
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99Why Trust UsWe tested, rated and ranked the most advanced smoke
alarms on the market today. We chose smart smoke alarms that do more than simply blare an alarm for fire and carbon monoxide emergencies. The products we reviewed are cutting edge devices made for 21st century homes, and they all have mobile apps. While researching for this comparison, we
looked into the differences between the sensors each smoke detector uses and found research from Underwriters Laboratories UL that suggests you should have both photoelectric and ionization type smoke detectors in your home since each type is suited for different types of fires. For example, photoelectric sensors do better with smoldering fires that grow slowly and produce a lot of smoke while ionization alarms are better for detecting fast growing, flaming fires. UL is not alone in this recommendation; many other fire safety organizations make the same suggestion.
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Sometimes cameras offer both.
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