3 Pack Smoke Detector Battery Operated with Photoelectric Sensor and Silence Button, Travel Portable

Sound LED warning：When the alarm senses products of combustion and goes into alarm,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.fire alarms smoke detectors can only sound their alarms when they detect smoke or detect combustion particles in the air.They do not sense heat,flame,or gas.
Photoelectric Technology: Our photoelectric smoke alarm with Photoelectric technology which is optimized to detect slow smoldering fires which generate light smoke, little heat and may smolder for hours before bursting into flames.
Easy Installation: Can be installed in several minutes. Coming with screws and bracket. 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.
Suitable for multiple places: This smoke alarm does not contain any radioactive material. Smoke alarms should be installed in every room (except the bathroom and kitchen), finished attics and basements, making sure the people in your home will be able to hear and respond to the alarm sound.
ARRANTY AND SERVICE: Our products provide after-sales service. If you have any questions about our products, you can contact us, we will reply to you as soon as possible within 24 hours.