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The 8 Best ac smoke detectors of 2025

Are you trying to find ac smoke detectors among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling ac smoke detectors on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 10 hours of research and did 34 ac smoke detectors tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best ac smoke detectors you can buy today

SaleNo. 1
BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
  • Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure
  • Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm
  • To ensure complete protection make sure to place one on each level of your home and in each bedroom
  • Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke is detected
  • Simple to use, with a single test/silence button, and side load battery compartment tamper resistant locking brackets and universal mounting brackets make installation easy
  • Rigorously tested to meet UL standards120 volt AC power with 9V battery backup to keep alarm functioning during power outage
  • 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)
  • Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety
SaleNo. 2
First Alert SMI100-AC, 9120B Replacement Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack
  • First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
  • Through early warning interconnect, when one alarm sounds, all compatible alarms will sound
  • Battery backup provides continuous protection during power outages
  • Alarm indicator visually identifies the unit that initiated the alarm
  • Quick Connect Plug included allows for easy installation with no need to rewire
SaleNo. 3
First Alert SMI105-AC, Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup, 1-Pack
  • First Alerts Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
  • 10-Year battery backup provides continuous protection during power outages
  • Through early warning interconnect, when one alarm sounds, all compatible
  • Alarm indicator visually identifies the unit that initiated the alarm
  • End-of-life warning lets you know when it’s time to replace the alarm
SaleNo. 4
First Alert SMICO105-AC, Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with 10-Year Battery Backup, 3-Pack
  • First Alerts Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
  • 10-Year battery backup provides continuous protection during power outages
  • Through early warning interconnect, when one alarm sounds, all compatible
  • Quick Connect Plug allows for easy installation with no need to rewire
  • Alarm indicator visually identifies the unit that initiated the alarm
No. 5
Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators, 4 Pack
  • DETECTS SMOKE: Sounds a loud 85-decibel alarm when smoke is detected - 3 long beeps with red LED light flashing in time, repeating.
  • HARDWIRED & 10-YEAR BATTERY BACKUP: Operates on 120V AC wiring (installed in the ceiling). No battery changes for 10 years & saves up to $40 over the life of the detector.
  • ENHANCED SENSING TECHNOLOGY: Reduces false alarms often caused by cooking. Comprehensively tested to meet the latest UL standards, meets UL 217 9th Edition & FCC standards.
  • SELF-TESTING ALARM: Internal components ensure alarm is always operating as expected. Not a substitute for a manual push test, perform a button test once per week to verify alarm operation.
  • INTERCONNECT CAPABILITY: When one alarm sounds, they all sound, so you can get out faster. (Different models offer different interconnection options and requirements. See User Guide for more info.)
  • 3 LED NOTIFICATIONS: LED lights indicate alarm status, green = normal operation, amber = operating error, red = smoke detected.
  • TEST & HUSH BUTTON: Makes it easy to test the 5-inch smoke detector and silence false alarms, should they occur.
  • 10-YEAR WARRANTY: Begins when alarm is powered on. If that date is unknown, it should be assumed that alarms should be replaced. (10-yr limited warranty on alarm, not a battery performance claim.)
No. 6
SITERLINK Smoke Detector Hardwired, Smoke Alarm Interconnected with Battery Backup, Photoelectric Fire Alarms Smoke Detectors with LED Lights, UL217 Listed Fire Alarm for House, GS517, 4 Packs
  • Operated by AC 120V with 9V Battery Backup: SITERLINK hardwired smoke detector will last 10 years; the device includes 9V lithium battery, can be used normally even if the power outages; detected and notified automatically if it is low battary or error occured
  • Photoelectric Sensor for Accurately Detect: Photoelectric sensor smoke alarm helps to monitor smoke and fires quickly, provides the warning of fires as soon as possible; the loudly alarm signal (Loud>85dB) helps your family keep far away from fire dangerous
  • Alarming with Wired Interconnection: SITERLINK smoke detector with hardwired interconnection fuction up to 12 devices can be connected, one of alarms detects smoke, others will alarm with same sound signal but NO red LED flash, reliable security guards of different room of your big house
  • Test-Silence Button and LED Lights: Fire alarm with test button would be tested weekly by pushing the test button; if sounds the alarm signal without fire dangerous, could push the test button 2 seconds to silence it, please clean smoke, dust or insects in it; the green LED light means working, the red LED light is alarming or warning
  • High Quality and Friendly Customer Support: SITERLINK smoke alarm built with first-class fire-retardan PC plastic material, tested strictly before being sold in the market; any issue, please contact us, we will help you find a solution
SaleNo. 7
First Alert BRK 9120Bff-6 Hardwired Smoke Detector with Battery Backup, 6-Pack
  • 6 pack of hardwired smoke alarms, includes battery backup for power outages
  • Tamper resistant locking pins, single button silence/test and loud 85Db alarm
  • 120-Volt AC power with 9-volt battery backup (included) to keep alarm functioning during power outage
  • Open mounting design for easy installation with side load battery compartment for quick replacement and interconnect able up to 18 units (12 smoke, 6 co/heat/relay)
  • 10-Year limited
  • Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety
SaleNo. 8
SITERWELL Smoke Detector, Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm with 9V Backup Battery, Fire Alarm with Test/Silence Button, ETL-9th Listed, GS562A, 6 Packs
  • HARDWIRED SMOKE DETECTOR - Hardwired interconnected smoke alarm can connect up to 12 alarms, they can be installed more flexibly at any location within the home to maximize coverage of the secure area. When one of alarms detects smoke, they all sound, more than 85 decibels of alarm sound, so you never miss an emergency and can get out faster.
  • 10-YEAR PRODUCT LIFE - Hardwired smoke detectors can be used for ten years, are equipped with DC 9V batteries, providing protection in the event of a power outage. If low battery there will be a signal alarm, which informs you to change a new battery.
  • FAST ALERTS - Enhanced sensing technology that respond quickly to smoke, enhancing fire warning capabilities. It can more accurately detect smoke from smoldering fires, reduces false alarms often caused by cooking.
  • DO NOT DISTURB MODE - Hardwired interconnected smoke detector detects low voltage or a fault, pressing the test button activates a Do Not Disturb mode for approximately ten hours, preventing frequent alarms and flashing at night, ensuring your sleep is not disturbed.
  • TEST/LED NOTIFICATIONS - Hardwired interconnected smoke detector you only need to press one test button during the weekly test, and the rest can be tested at the same time. If the smoke alarm is in normal working condition, the green LED light is always on and the red LED light flashes every 40 seconds.
SaleNo. 9
First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup, 1-Pack
  • First Alerts Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
  • Through early warning interconnect, when one alarm sounds, all compatible
  • Quick Connect Plug allows for easy installation with no need to rewire
  • Battery backup provides continuous protection during power outages
  • Test/silence button for efficient testing to ensure alarm is working properly
SaleNo. 10
X-Sense AC Hardwired Combination Smoke and Carbon Monoxide Detector, Hardwired Interconnected Smoke and CO Detector Alarm with Replaceable Battery Backup, XP06, 1-Pack
  • 10-Year Product Life: This combination smoke and carbon monoxide detector features high-quality sensors and components which are built to last 10 years, protecting your home for a decade; it is hardwired into your home's power with a 9 V battery backup
  • Detects Both Smoke and CO: The X-Sense detector features a photoelectric smoke sensor that detects smoke from slow-burning fires, as well as an electrochemical CO sensor that detects dangerous CO levels in the air
  • Reliable Safety Network for Complete Monitoring: Interconnect up to 18 X-Sense hardwired detectors to detect potential danger anywhere in your home, for complete monitoring and safety
  • If One Alarm Goes Off, All of Them Will: When one alarm is triggered, all emit a loud 85 dB sound, to ensure that everyone in your house is alerted; the backup battery ensures that all units are always connected and continue to function normally, even in the event of a power failure
  • Single Button Control: Simply press the test/silence button on one of the units to test or silence the entire interlinked system, without the need to operate each unit individually; the large, user-friendly central button allows for easy control with a long stick, with no climbing ladder required
SaleNo. 11
First Alert SMCO100V-AC, Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup and Voice & Location Alerts, 1-Pack
  • First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
  • Voice & location alerts tell you what the danger is and its location to help you escape safely
  • Through early warning interconnect, when one alarm sounds, all compatible alarms* will sound
  • Battery backup provides continuous protection during power outages
  • Quick Connect Plug allows for easy installation with no need to rewire
No. 12
Kidde i12040 120V AC Wire-In Smoke Alarm with Battery Backup and Smart Hush
  • Easy Installation - Front battery pull tab allows battery activation without removing alarm from mounting bracket. Large mounting base makes mounting easier, protects surface paint from dirt and covers imperfections. Pre-stripped wiring harness with easy off cap does not require stripper tool. Tinned strands increase conductivity and wire nut grip.
  • Fewer callbacks - One button design for easy operation and less confusion. Operates Hush and alarm test. Battery run down protection will shut down alarm memory when AC power is not present, reducing low battery chirp. Dust cover protects sensor from contaminates during construction reducing nuisance alarms.
  • User-friendly features - Tamper resist locking feature deters alarm theft. Alarm memory flashes red LED indicating which unit was the initiating alarm in interconnected system.
  • Interconnectable - Connect up to 24 devices (of which 18 can be initiating) including smoke, CO and heat alarms. See user’s guide for complete instructions.
  • Battery backup - 9v battery backup (included).
  • Hush feature temporarily silences nuisance alarms
  • One touch test button tests unit's electronic circuitry
  • Battery backup 9V battery included
  • Tamper resist locking pin helps deter alarm tampering and theft
  • Kidde smoke alarms meet the UL requirements
SaleNo. 13
First Alert SMI100, Battery-Operated Smoke Alarm, 1-Pack
  • First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
  • Battery-operated alarm allows for easy installation and maintenance
  • Front access battery compartment makes for easy battery replacements
  • End-of-life warning lets you know when it’s time to replace the alarm
  • Test/silence button for efficient testing to ensure alarm is working properly
No. 14
Kidde 21026063 AC Hardwired Smoke Detector Alarm with 9V Back up and Front Load Battery Door, White
  • Ionization sensor technology senses invisible fire particles, associated with fast flaming fires
  • Smoke alarm operates on a 120V wired power source with a 9-Volt alkaline battery backup (included)
  • Front-loading battery door allows for easy change of the battery without removing the alarm from the mounting bracket
  • Test-Hush button makes it easy to test the smoke detector and silence false alarms that occur from cooking or shower steam
  • UL Listed with a 10-year limited warranty which begins when the alarm is powered on, if that date is unknown it should be assumed the alarm should be replaced.
SaleNo. 15
Smoke Detector, Hardwired Interconnected Smoke Detectors, Smoke Alarm with Replaceable 9V Battery, Interconnects Up to 12 Fire Alarms Smoke Detectors, Photoelectric Fire Alarm with Test/Silence Button
  • [Hardwired interconnection] Up to 12 smoke alarms can be interconnected to cover your entire home. When one detects smoke, they all make a sound to alert everyone in the house, creating an interconnected safety net for your home.
  • [9V Battery backup] Hardwired smoke detectors are equipped with DC 9V batteries. Ensure that all units are always connected and continue to function properly, even in the event of a power failure. Low battery alarm reminds you to replace the battery as soon as possible. If an error occurs, the system automatically triggers the fault mode, prompting you to check the device.
  • [Test Mute button and LED light] It is connected with other alarms. Just press the test/mute button on one of the units to test or mute the entire interconnected system. If the smoke alarm is in normal working condition, the green LED light is always on and the red LED light flashes every 32 seconds
  • [Photoelectric smoke sensor] Based on advanced photoelectric technology, smoke alarms can be more sensitive, fast, accurate measurement of smoke levels. More than 85 decibels of alarm sound, you can more clearly hear the danger coming.
  • [Simple installation] The installation of smoke alarm is very simple. The AC connector is connected only to the mains power and signal cables. (Please connect as instructed)
No. 16
Kidde Smoke Detector, Hardwired Smoke Alarm with 9-Volt Battery Backup, Test-Reset Button, Interconnect Capability, 1 Count (Pack of 1), White
  • Ionization sensor technology senses invisible fire particles, while a electrochemical sensor detects CO gas
  • Smoke alarm operates on a 120V wired power source with a 9-Volt alkaline battery backup
  • An 85-decibel alarm sounds & a red LED indicates the smoke detector is sensing smoke or fire
  • Test-Hush button makes it easy to test the smoke detector and silence false alarms that occur from cooking or shower steam
  • Interconnection capability: allows you to connect up to 18 Kidde smoke, heat, or CO alarms, with the possibly it interconnect 6 strobe lights or relay modules
  • UL Listed with a 10-year limited warranty which begins when the alarm is powered on, if that date is unknown it should be assumed the alarm should be replaced.
No. 17
Kidde 21007581 120 V Wire-In Smoke Alarm
  • – Ionization Sensing Technology
  • – Battery Backup (batteries included)
  • – Alarm Memory Indicator
  • – Front Load Battery Door
  • – Hush Button
SaleNo. 18
First Alert Interconnect Hardwire Smoke Alarm with Battery Backup & Voice Alerts, 3-Pack
  • First Alert BRK Precision Detection advanced sensing technology reduces cooking nuisance alarms and delivers early warning
  • Voice & location alerts tell you the location of danger
  • Latching Alarm Indicator visually identifies the unit that initiated the alarm or low battery
  • Battery backup provides continuous protection during power outages
  • Interconnects with most First Alert and BRK alarms so when one sounds, all compatible alarms sound to provide an early warning
SaleNo. 19
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Voice Alerts, Interconnectable, LED Warning Light Indicators, 2 Pack
  • 2-IN-1 DETECTION: Alerts you to both smoke & carbon monoxide (CO) using a single, cost-effective detector.
  • HARDWIRED & 2 AA BATTERY BACKUP (Included): Operates on 120V AC wiring (installed in the ceiling) with 2 AA alkaline batteries that provide battery backup coverage during power outages.
  • ENHANCED SENSING TECHNOLOGY: Reduces false smoke alarms often caused by cooking. Comprehensively tested to meet the latest UL standards, meets UL 217 9th Edition, UL 2034 4th Edition, & FCC standards.
  • VOICE ALERTS: Crystal-clear voice alerts will say "Fire!" when smoke is detected or "Warning! Carbon Monoxide!" if CO is detected, so you can react quickly.
  • INTERCONNECT CAPABILITY: When one alarm sounds, they all sound, so you can get out faster. (Different models offer different interconnection options and requirements. See User Guide for more info.)
  • SELF-TESTING ALARM: Internal components ensure alarm is always operating as expected. Not a substitute for a manual push test, perform a button test once per week to verify alarm operation.
  • 3 LED NOTIFICATIONS: LED lights indicate alarm status, green = normal operation, amber = operating error, red = smoke or carbon monoxide detected & a loud 85-decibel alarm will sound.
  • 10-YEAR LIMITED WARRANTY: Warranty begins when the alarm is powered on. If that date is unknown, it should be assumed that alarms should be replaced.
SaleNo. 20
Siterlink Hardwired Interconnected Smoke Detectors,Photoelectric Smoke Alarm with 9V Battery Backup,Test/Silence Button, Hard Wired Fire Alarm for Home GS562A 6pack
  • Hardwired Alarm with 9V Battery Backup: Enjoy uninterrupted protection with our hardwired smoke alarm that operates on 120V AC wiring. Even during severe weather or power outages, the 9V battery backup ensures continuous operation, providing worry-free protection for you and your family.
  • Accurate detection of photoelectric sensors: The highly precise technology of smoke detectors and photoelectric sensor smoke alarms help to quickly monitor smoke and fires, and provide fire warnings as soon as possible; A loud alarm signal (loudness>85dB) can evacuate the scene in a timely manner.
  • Wired Interconnection Alarm: The SITERLINK smoke detector has a hard wired interconnection function and can connect up to 12 devices. One of the alarms detects smoke, while the other alarms will sound the same sound signal but without the red LED flashing, ensuring reliable safety in different rooms of your large house
  • Test the mute button and LED light: By pressing the test button, the fire alarm with the test button will be tested weekly; If there is no fire hazard when an alarm signal is issued, you can press the test button for 2 seconds to silence it and remove any smoke, dust, or insects; Green LED light indicates operation, red LED light indicates alarm or warning
  • Built-in Indicator LED Light: SiterlinkGS562A model will be the traditional external indicator built-in, hidden LED indicator, the light is soft and visible, but will not disturb you and your family's sleep, suitable for installation in the children's room.

How to choose a good ac smoke detectors

Does the idea of finding a fantastic ac smoke detectors make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in ac smoke detectors. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top ac smoke detectors products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top ac smoke detectors on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top ac smoke detectors brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top ac smoke detectors based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the ac smoke detectors were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good ac smoke detectors, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your ac smoke detectors.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting ac smoke detectors for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our ac smoke detectors. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what ac smoke detectors should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on ac smoke detectors.