The combination smoke and carbon monoxide alarm with a 10-year sealed battery provides 2-in-1 protection to help protect your home and family. #ReadyAtHome https://www.firstalert.com/product/combination-photoelectric-smoke-and-carbon-monoxide-alarm-with-10-year-battery/ | First Alert

Upgrade your home's smoke alarms to First Alert 10-Year Sealed Battery Alarms for no battery replacements! They are easy to install and provide 10 years of reliable protection. | First Alert

Install smoke & CO alarms in your home to help provide your loved ones with an early warning. Think every level, every bedroom. And don't forget fire extinguishers! | First Alert

Simply install the First Alert CO615 Carbon Monoxide Alarm by plugging into any standard electrical outlet. Also equipped with battery backup for protection during power outages and a digital display for easy readings. #KnowCO | First Alert

緊急事態よ！ 家中のスマホやタブレットをアラートで埋めつくすWi-Fiルーター

How To Replace A Battery