Carbon Monoxide Alarm, Battery Operated Smoke Alarm with 85db Alarm and Test Button for 24 Hour Protection, White(3AA battery not included)
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<b>[Product Information]</b><br>
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<li>Proven performance for detecting smoke from hidden and slow-burning fires; photoelectric sensor can also detect dangerous fast-burning fires that can cause extreme damages.</li>
<li>The smoke detector works with photo-optical technology. When smoke is produced the alarm sets off at 85 dB. If there aren't any smoke particles left in the air, the alarm will stop sounding.</li>
<li>The battery of the RM149 Smoke detector has a 5 year lifetime and the sensor has a maximal lifetime of 10 years. The empty battery indicator alerts you with a sound signal if your battery needs to be replaced.</li>
<li>Malfunction warning, low battery warning, and hush mode enabled; allows you to instantly be aware of the detector's working status.</li>
<li>12-Month Hassle, 7*24 online support standing by, worry- free 100% money-back guarantee, 1-Years Replacement Warranty and life-time technical support.</li>
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