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First Alert SA303CN3 Battery Powered Ionization Smoke Alarm with Test/Silence Button , White

4.5 4.5 out of 5 stars 23,056 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Smoke Detectors & Fire Alarms by FIRST ALERT
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SA303CN3
Alarm
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Purchase options and add-ons

Brand FIRST ALERT
Style SA303CN3
Power Source Battery Powered
Color White
Product Dimensions 1.9"D x 5.4"W x 5.4"H
Alarm Audible
Sensor Type Ionization
Material Paper

About this item

  • Help keep your family safe with this battery powered smoke alarm featuring an ionization sensor for smoke detection; a loud 85 decibel alarm sounds when smoke levels are elevated
  • Ionization sensor is effective in recognizing smoke from flaming fires such as paper and grease fires
  • Battery operated alarm unit provides continuous monitoring even if there's a power failure; Plus, it's easy to install
  • Tamper resistant alarm also features a single test/silence button, side battery door, and missing battery guard
  • To ensure complete protection make sure to place one on each level of your home and in each bedroom
  • First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
› See more product details

Customer ratings by feature

Easy to use
4.9 4.9
Light weight
4.8 4.8
Noise level
4.4 4.4
Easy to install
4.1 4.1
See all reviews

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First Alert SA303CN3 Battery Powered Ionization Smoke Alarm with Test/Silence Button , White
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From the manufacturer

First Alert
Super Prepared Family

Smoke

Carbon Monoxide

Extinguishers

Escape Ladders

Smoke Alarms

Place at least 10 feet from kitchen/stove, and on the ceiling or high on a wall, no more than 10 inches from top.

Carbon Monoxide Alarms

Carbon monoxide alarms can be placed anywhere, not just the ceiling or high on a wall. They should be replaced every 5 to 7 years.

Fire Extinguishers

Keep in the kitchen and garage, but make sure to have the right grade for the type of fire that might occur.

Escape Ladders

Have at least one if your home has more than one story. Each room needs 2 escape routes; in most bedrooms it's the window, so have a ladder nearby.

Recommended Placement

Product guides and documents

Installation Manual (PDF)
User Manual (PDF)

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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First Alert SA303CN3 Battery Powered Ionization Smoke Alarm with Test/Silence Button , White

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Product Description

Product Description

Battery powered smoke alarm with mute feature silences nuisance alarms from cooking smoke or shower steam. Single button also tests alarm functions. Easy access battery drawer: No need to remove alarm from ceiling to change battery. 10-year limited warranty. Meets UL standards. Optional theft-prevention lock when activated, batteries and/or alarm cannot be removed without proper tools.

Amazon.com

Working smoke alarms cut the risk of dying in a home fire by 50%, and that's important because a home fire starts every 83 seconds! The faster you know about a fire, the faster you can start moving your family outside. The First Alert smoke alarm with silence button allows you to both silence a non-threatening alarm and to test the unit's functionality. It features a low battery alert to remind you when to change the battery and has a missing battery guard to ensure that a battery is placed inside the alarm. The side battery drawer slides open for easy battery replacement. A blinking power indicator on the unit confirms that it is receiving power. The alarm contains an optional pin to lock the battery and unit in place for tamper resistance. It can be mounted on either the ceiling or the wall and can be used in mobile homes and RVs. It includes one 9-volt battery and has a 10-year limited warranty. UL listed for safety.Bree Norlander: what's in the Box: One smoke alarm, user's manual, and one 9-volt battery

Top Brand: FIRST ALERT

Highly Rated
100K+ customers rate items from this brand highly
Trending
100K+ orders for this brand in past 3 months
Low Returns
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First Alert SA303CN3 Battery Powered Ionization Smoke Alarm with Test/Silence Button , White
FIRST ALERT First Alert SA303CN3 Battery Powered Ionization Smoke Alarm with Test/Silence Button , White
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Price-38% $9.97
List: $15.99		$13.99$11.39$10.99$17.84$11.99
Delivery
Get it as soon as Saturday, May 4
Get it as soon as Saturday, May 4
Get it as soon as Saturday, May 4
Get it as soon as Saturday, May 4
—
Get it as soon as Saturday, May 4
Customer Ratings
4.54.5 out of 5 stars23,056
4.34.3 out of 5 stars2,664
4.64.6 out of 5 stars43
4.54.5 out of 5 stars1,586
4.74.7 out of 5 stars27
4.54.5 out of 5 stars3,143
Easy to install
4.1
4.3
—
4.5
—
4.4
Battery life
3.7
3.8
—
4.2
—
4.0
Value for money
3.6
3.8
—
4.0
—
3.9
Adhesion
—
4.1
—
4.2
—
4.1
Sold By
Amazon.com
Siterlink
Jemay-US
Jemay-US
Amazon.com
Ecoey-direct
power source
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
sensor type
Ionization
Photoelectric
Photoelectric
Photoelectric
Ionization
Photoelectric
style
SA303CN3
9V Replaceable Battery
—
1-Year Battery GS506
Smoke
Not Hardwired
alarm
Audible
Audible
Audible
Audible
Smoke Alarm
Visual

Important information

Bulb Voltage

120 volts

Customer reviews

4.5 out of 5 stars
4.5 out of 5
23,056 global ratings

Customers say

Customers like the ease of installation and value of the gas smoke fire alarm. For example, they mention it's easy to mount on the wall or the ceiling and a great buy. That said, some complain about the battery life and quality.

AI-generated from the text of customer reviews

784 customers mention680 positive104 negative

Customers find the installation of the gas smoke fire alarm to be easy. They mention that it comes with instructions and hardware.

"These work well and are not too expensive. They are easy to install. Some smoke detectors have a 10 year battery but never seen to last that long...." Read more

"I needed an alarm for the basement and this one is perfect. Simple installation. It is battery powered...." Read more

"...It's easy to install and comes with instructions and hardware. If you are purchasing a replacement, you don't even need to install hardware...." Read more

"easy to install and works great" Read more

599 customers mention482 positive117 negative

Customers like the value of the gas smoke fire alarm. They mention it's a great product for the price, and a good investment. Some say it works as designed and is a fantastic buy.

"These work well and are not too expensive. They are easy to install. Some smoke detectors have a 10 year battery but never seen to last that long...." Read more

"...If you need a smoke alarm at a good value, and don't mind replacing it a few years down the line, this is the product for you...." Read more

"installation was fast and easy. great price !" Read more

"Very good for the price!" Read more

1,509 customers mention897 positive612 negative

Customers are mixed about the quality of the gas smoke fire alarm. Some mention that they work well and are easy to install, while others say that they were inoperable units that stopped working after 3 years.

"These work well and are not too expensive. They are easy to install. Some smoke detectors have a 10 year battery but never seen to last that long...." Read more

"I purchased 2 for $15 and one stopped working after 3 years. I changed the battery, but light still red...." Read more

"I needed an alarm for the basement and this one is perfect. Simple installation. It is battery powered...." Read more

"...PRODUCT CLAIMS- ionization sensor for smoke detection - I'm not sure about this, but we have one outside of the bathroom, and it does go off..." Read more

493 customers mention197 positive296 negative

Customers are mixed about the false alarm of the gas smoke fire alarm. Some mention that it's loud enough to hear outside, and has not once sounded off accidentally. However, others say that it started beeping, and with 10-year batteries it failed to emit a single chirp.

"Very loud and extremely sensitive. Go off if I take something from the oven having burnt food on it...." Read more

"...The alarm is loud enough to hear outside. I feel much more comfortable knowing our family is safe." Read more

"...the "new" Kidde smoke detectors with 10-year batteries failed to emit a single chirp...." Read more

"...You need a drill or screwdriver. That's it.- single test/silence button - Easy to find, easy to turn off, easy to test...." Read more

375 customers mention86 positive289 negative

Customers are dissatisfied with the battery life of the gas smoke fire alarm. They mention that it goes off quite often when the oven door is opened, the batteries died after 6 months, and it only lasted 5 years. Some customers also say that the product is not reliable and goes through a lot of batteries.

"Installed one that's about 10-12 ft from the kitchen and it goes off quite often when the oven door is opened even though there is no visible smoke...." Read more

"...So, if, by chance, the batteries corrode, leaving corrosion on the contact points in the cage, there is no way to get into the cage to clean the..." Read more

"...I had to run out to the kitchen where this is installed because it was going off, only to have it stop once I got there and no fire or smoke present." Read more

"...Simple installation. It is battery powered. I especially like the bright light to guide the way out of the house...." Read more

So far so good
5 Stars
So far so good
Fast shipping - looks good
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Top reviews from the United States

Rusty
5.0 out of 5 stars These work well
Reviewed in the United States on April 11, 2024
Style: SA303CN3Pattern Name: AlarmVerified Purchase
These work well and are not too expensive. They are easy to install. Some smoke detectors have a 10 year battery but never seen to last that long. I don't mind replacing the battery because it's easy to replace.
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Ciara Madre
5.0 out of 5 stars Broke after 3 years, but it does the job, and it’s cheap
Reviewed in the United States on February 14, 2024
Style: SA303CN3Pattern Name: AlarmVerified Purchase
I purchased 2 for $15 and one stopped working after 3 years. I changed the battery, but light still red. Called mfg and was told the unit is defective, I have another as a backup, so it doesn’t matter to me. Woke me up at 3am, but I guess that’s a good thing.
2 people found this helpful
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ErmsMom
5.0 out of 5 stars Easy to install
Reviewed in the United States on April 4, 2024
Style: SA304CN3Pattern Name: AlarmVerified Purchase
I needed an alarm for the basement and this one is perfect. Simple installation. It is battery powered. I especially like the bright light to guide the way out of the house. The alarm is loud enough to hear outside. I feel much more comfortable knowing our family is safe.
One person found this helpful
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Seth T. Stacey
4.0 out of 5 stars Cheap alarm for peace of mind, easy to replace if there's a problem
Reviewed in the United States on October 17, 2022
Style: SA303CN3Pattern Name: AlarmVerified Purchase
Bought this alarm to replace our "we changed the batteries last month, why is it intermittently beeping" alarm. This one is so sensitive that it goes off when the oven's on BROIL.

The good news is that it's really easy to turn off for a false alarm; just press the button on the alarm's face.

It's easy to install and comes with instructions and hardware. If you are purchasing a replacement, you don't even need to install hardware. You can easily twist this on to an existing plate (again, if it's a replacement - worked for us, your mileage may vary). We purchased new smoke alarms <5 years ago, have replaced the batteries several times, and are now replacing the alarms themselves.

PRODUCT CLAIMS
- ionization sensor for smoke detection - I'm not sure about this, but we have one outside of the bathroom, and it does go off during particularly steamy showers
- battery operated alarm unit monitors during power failure - We've had no issues (and, if anything, more peace of mind) during times without power
- easy to install - VERY easy. You need a drill or screwdriver. That's it.
- single test/silence button - Easy to find, easy to turn off, easy to test. Battery is easy to check and change with the side battery door.

If you need a smoke alarm at a good value, and don't mind replacing it a few years down the line, this is the product for you. For this price, it's easy to get one for each bedroom and floor of your home (as they recommend). Keep a few extra 9V batteries handy in case you need to replace one at an inconvenient time.
16 people found this helpful
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pooh
5.0 out of 5 stars great product
Reviewed in the United States on April 21, 2024
Style: SA303CN3Pattern Name: AlarmVerified Purchase
easy to install and works great
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Christopher Wallace
5.0 out of 5 stars Extremely effective
Reviewed in the United States on March 8, 2024
Style: SA303CN3Pattern Name: AlarmVerified Purchase
Very loud and extremely sensitive. Go off if I take something from the oven having burnt food on it. You won't have to worry about hearing them for you will be notified in plenty of time to leave your house.
One person found this helpful
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cheryll l gatzen
5.0 out of 5 stars nice price for a necessity in all homes
Reviewed in the United States on April 22, 2024
Style: SA303CN3Pattern Name: AlarmVerified Purchase
installation was fast and easy. great price !
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Metp
5.0 out of 5 stars Easy to install
Reviewed in the United States on April 12, 2024
Style: SA303CN3Pattern Name: AlarmVerified Purchase
Good product. Easy to use
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Top reviews from other countries

Al
4.0 out of 5 stars Not so good ,,,,
Reviewed in Canada on January 2, 2021
Style: SA303CN3Pattern Name: AlarmVerified Purchase
Yes I’m sure the alarm is a good product but I never received it after 1 month , DHL not so good 👎
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