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First Alert's Series of Basic Smoke Alarms work exceptionally well in detecting flaming fires. A Mute Button has been included to serve the dual purpose of silencing nuisance alarms brought on by cooking smoke and shower steam. This button also allows you to test the functionality of your alarm. First Alert Basic Alarms are an ideal purchase for those looking for basic fire protection with the option of conveniently muting false alarms. Basic Smoke Alarms also come equipped with an EZ access battery door that removes the hassle and burden of collecting your alarm from the ceiling and replacing its batteries. The combination of a 9v battery and an increased emphasis on the unit's 85db sound output establish peace of mind, while the inclusion of an anti-theft prevention lock all but guarantees the safest of experiences. This alarm carries a 10 year limited warranty and complies with UL217 Standards.
Ionization Sensor Reliably Detects Flaming Fires
The First Alert Basic Battery Operated Smoke Alarm with Battery Backup comes equipped with an ultra-reliable ionization sensor to provide the earliest possible warning of a fast-flaming fire. The sensor is optimized to detect flaming fires, such as those caused by paper, kitchen grease, and other fast-combusting materials.
Battery-Powered Alarm Installs Easily
This battery-powered smoke detector requires no rewiring and no electrician to install. Simply mount it on a wall or ceiling using the open mounting design. An end-of-life signal will notify you when the detector is nearing expiration.
Test and Silence Button
Mute Button has been included to serve the dual purpose of silencing nuisance alarms and testing the functionality of your alarm.
EZ-Access Battery Door
The addition of an EZ Access Battery Door removes the hassles and burdens associated with changing your alarm's batteries.
First Alert Smoke Alarm SA303CN3
* California and New York Residents - Please note this alarm is not compliant with your State's 10 Year Sealed Battery Alarm Legislation Requirements.
Other reasons include: It could be a different device or appliance such as a security system, monitor, carbon monoxide alarm, or other device which has a similar low battery or alert signal. Some of the same factors that cause unwanted alarms can cause intermittent alarms: dust and insects in the alarm or power interruptions in hardwired alarms. Improper wiring on AC or AC/DC smoke alarms. AC alarms will chirp every 5 seconds if the interconnect wire is grounded. The orange interconnect wire should NEVER be grounded; it should only be used to interconnect other smoke alarms or compatible devices.
Average score based on 55 reviews
- Reviewed: 10/18/2022 by Kate and Bill M
First Alert Basic Battery Operated Smoke Alarm
set up easily. My last set lasted over 12 years. Great investment for your home
- Reviewed: 10/26/2021 by Pete B
Just what I ordered!
Products were properly pulled from the shelf and sent. Arrived in good shape and the 2 units replacements for existing were installed the next day and found to be working. I highly recommend this retailer.
- Reviewed: 08/16/2021 by Brent B
THE place to buy First Alert products
First Alert products are excellent, including this simple battery powered smoke detector. I used this one to ensure I had both PE and Ion detection in a bedroom. The First Alert Store has great prices, very quick shipping and superlative customer service.
- Reviewed: 07/28/2021 by Antonio T
Easy to Install
We recently purchased a house that came with a SA303 from 2009. Happy to say that the newer model SA303CN3 fits into the existing bracket. Put in a battery, close the lid, and twist in -- as easy as pie.
- Reviewed: 01/01/2021 by Ronald Walsh
Easy to install, came with battery, received product in 3 days
- Reviewed: 12/14/2020 by Louis Soriano
Have Throughout The House
- Reviewed: 11/16/2020 by Louis Soriano
Have Throughout The house
Changed over to these from some 20 year old First Alert models I had
- Reviewed: 10/30/2020 by Louis Soriano
Burnt something in the toaster last night works fine
- Reviewed: 08/21/2020 by Rhonda Smith
Best price around
This is exactly what we needed to add more protection around our house fast and easily. This is the best price I found online and around town.
- Reviewed: 10/23/2022 by Susan M
What I appreciate and admire about First Alert is I was able to buy the same model I had and it fit perfectly on the base. I am so thankful to be able to swap out my old smoke alarm for my new smoke alarm in seconds!