Rated 1 out of 5 by HomeDepotCustomer from Shelf Life for SC9120B First Alert Combo Smoke and Carbon Monoxide Alarm Be aware and forewarned when purchasing this product of the manufacture date on the back of the alarm unit. Customer service at First Alert (800-323-9005) tells me that there is a shelf life of only 5 years on units manufactured Smoke Alarms; Carbon Monoxide Alarms; Why is my carbon monoxide alarm beeping or chirping? Nov 1, 2011. the alarm pattern will continue for the first five minutes after detecting carbon monoxide and then the cycle will repeat every one minute. 120V AC/DC Smoke and CO Alarm - 10YR Lithium Battery - Locked Battery Drawer » Electrochemical Carbon Monoxide Sensor - the most accurate sensor available as compared to other sensing technologies Used under license by The First Alert Trust. monoxide gas at the sensor. Carbon monoxide gas may be present in other areas. The Smoke Alarm will only indicate the presence of smoke that reaches the sensor. The Smoke Alarm is not designed to sense gas, heat or flames. All BRK ® and First Alert® Smoke Alarms conform to regulatory requirements, including UL217 and are designed to detect This video of the First Alert's Talking Smoke and Carbon Monoxide Alarm will show you what is in the package and give you a brief description of the product. Our quick explanation of this First Alert (Canada) Inc., a subsidiary of Newell Brands Inc. is Canada's most trusted brand in home safety and an industry leader in offering families peace of mind. Get conveniently. connected with Onelink® Smoke + Carbon Monoxide alarm with WiFi® connectivity and help to keep your home and family safe. Thank you for choosing Onelink by First Alert for your safety needs. In addition to the alarm sounds, you canreceive noti?cations in case of an emergency to help provide a warning of a ?re or carbon monoxide leak while you are home or away. Please take time to read this manual and make this alarm an integral part of your family's safety plan. First Alert leads through innovation, with a celebrated history of new products and technologies, such as the first residential smoke alarm and the first battery powered CO alarm. The #1 brand in home safety has built a legacy of trust and delivers unparalleled reliability in fire safety. Amazon.com: first alert carbon monoxide. Skip to main content. First Alert Smoke Detector and Carbon Monoxide Detector Alarm with Built-In 10-Year Battery, BRK PRC710 (Renewed) $40.06 $ 40. 06. Get it as soon as Fri, Jun 7. FREE Shipping by Amazon. This First Alert SC9120B hardwired smoke and carbon monoxide detector includes a 9-volt battery backup that continues to protect you in the event of a power failure. The alarm features electrochemical CO sensing technology, an ionization sensor for smoke detection, and an 85-decibel alarm. First Alert is a state of the art wireless combination smoke and CO alarm designed to provide early warning of a fire or Carbon Mono