Smoke Detector, Ardwolf 2 Pack Photoelectric Smoke and Fire Alarm with UL Listed GS528A Battery-Powered (9V Battery Included)，10 Years Life Time, Save Lives When Fire Happen at Home, Hotel, School

Smoke Detector, Ardwolf 2 Pack Photoelectric Smoke and Fire Alarm with UL Listed GS528A Battery-Powered (9V Battery Included)，10 Years Life Time, Save Lives When Fire Happen at Home, Hotel, School

• Photoelectric Technology: Ardwolf smoke alarms with photoelectric technology which is optimized to notify slow smoldering fires which generate light smoke, little heat and may smolder for hours before bursting into flames.
• UL Listed Battery-Powered: This Fire alarm is powered by one 9V battery(included), it will not be affected by power outage. When an intermittent "chirp" accompanied by a red LED flash every 32 seconds indicates a low battery.
• 10 Years Life Time Alarm: with superior quality and technology, the smoke alarm can serve up to 10 years. NOTE: Please test it once a month and clean up the dust on the alarm every 6 months to ensure the smoke alarm works properly.
• Sound & LED Warning: When the alarm sensers products of combustion and goes into alram, the red LED will flash rapidly (one flash per second). The rapid flashing LED and pulsating alarm will continue until the air is cleared or the test button is released.
• Suitable for Multiple Places: This wireless smoke alarm does not contain any radioactive material. It should be installed in every room (except the bathroom and kitchen), making sure the people in your home will be able to hear and respond to the alarm sound.