Lecoolife

4 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated Travel Portable Photoelectric Fire Co Alarm for Home

• Easy Installation: Can be installed in several minutes. Coming with screws and bracket. Powered by 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.
• Battery test: Need to test the battery of the product every week to ensure the use of the product
• Clean the alarm regularly to avoid dust clogging, which may cause the smoke detector to lose sensitivity.