8 Best Smoke Detectors

person smoking beside window

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Smoke detectors don’t seem to get the same attention as home security systems like security cameras, smart locks and for something so important to home and personal safety, this can be a costly mistake.

A house fire is a nightmare scenario. Working smoke alarms and the early detection they offer, are important elements, maybe the most important for your home.

Check this list below to help you choose one that you can trust to protect yourself, your loved ones, and your home. If you’re also having problems with water leakage, you can check the best water leak detectors.

1. Best Smoke Detector: First Alert – SA511CN2-3ST

Top Features:

  • Interconnected
  • Voice location
  • Photoelectric sensor

Technical Details:

  • Power source: Battery
  • Sensor type: Photoelectric
  • Warranty: 10 years
  • Weight: 1.39 pounds
  • Dimensions: 2 x 5 x 5 inches

The First Alert – SA511CN2-3ST features an 85-decibel siren and voice alarm that tells you where the danger is located. It uses photoelectric sensing technology which is environmentally friendlier and which reduces nuisance alarms, making it ideal for cooking areas. It is also great for sensing slow smoldering fires quickly. A low battery signal alerts you to replace the battery.

Most of the reviewers say that they’re working as intended with no unexpected and sleep-interrupting problem. They interact with each other wirelessly.

A few reviewers complained that they gave faulty units. Some say that some units make false alarms.

The smoke detector’s dimensions are ‎‎2 x 5 x 5 inches. It weighs ‎‎1.39 pounds.

View First Alert – SA511CN2-3ST on Amazon.

2. Best Value Smoke Detector: First Alert – SCO5CN

Top Features:

  • Simple to use
  • Dual sensor
  • Photoelectric sensor

Technical Details:

  • Power source: Battery
  • Sensor type: Electrochemical, photoelectric
  • Warranty: 7 years
  • Weight: 10.5 ounces
  • Dimensions: 3 x 4 x 3 inches

The First Alert – SCO5CN provides continuous monitoring of CO levels, even if there’s a power failure. Features an electrochemical carbon monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire. Battery-operated unit installs quickly and easily without an electrician.

Most of the reviewers say that it is A must-have safety item if your house has gas appliances. It is easy to install and works flawlessly.

A few reviewers complained that it malfunctions after being used for a couple of months. Some say it arrived with damages.

The smoke detector’s dimensions are ‎‎3 x 4 x 3 inches. It weighs 10.5 ounces.

View First Alert – SCO5CN on Amazon.

3. Best Budget Smoke Detector: First Alert – SA303CN3

Top Features:

  • Ionization sensor
  • Tamper-resistant
  • Alarm sounds

Technical Details:

  • Power source: Battery
  • Sensor type: Ionization
  • Warranty: 10 years
  • Weight: 6.4 ounces
  • Dimensions: 4.3 x 4.3 x 1.9 inches

The First Alert – SA303CN3 is a battery-powered smoke alarm with a mute feature that silences nuisance alarms from cooking smoke or shower steam. Single-button also tests alarm functions and has an easy access battery drawer. No need to remove the alarm from the ceiling to change the battery.

Most of the reviewers say that it is highly recommended for the price and quality. It is heavy-duty and sensitive to smoke.

A few reviewers complained that some products are defective. Some say the test button doesn’t work.

The smoke detector’s dimensions are ‎4.3 x 4.3 x 1.9 inches. It weighs ‎‎6.4 ounces.

View First Alert – SA303CN3 on Amazon.

4. Best Smart Smoke Detector: Google – Nest Protect

Top Features:

  • Phone alerts
  • CO sensor
  • App silence

Technical Details:

  • Power source: Battery, wired
  • Sensor type: Carbon monoxide
  • Warranty: 5 years
  • Weight: 1 pound
  • Dimensions: 5.3 x 1.5 x 5.3 inches

The Google – Nest Protect is a smoke detector and carbon monoxide detector that speaks up in a friendly voice to give you an early warning when there’s smoke or CO in your home. It can send you a message when there’s a problem or if the batteries are running low and with App Silence, you can hush the alarm on the Nest app if everything’s under control.

Most of the reviewers say that it is way better than they expected. It has the ability to shut off false alarms quickly either manually or via the App.

A few reviewers complained that it malfunctions a lot. Some say a unit will go offline and never come back till you can reset it manually.

The smoke detector’s dimensions are ‎5.3 x 1.5 x 5.3 inches. It weighs ‎1 pound.

View Google – Nest Protect on Amazon.

5. Best Interconnected Smoke Detector: Kidde – ‎RF-SM-DC

Top Features:

  • Flashing LED
  • Twist-off mounting
  • Hush feature

Technical Details:

  • Power source: Battery
  • Sensor type: Ionization
  • Warranty: 10 years
  • Weight: 14.4 ounces
  • Dimensions: 7 x 9 x 10 inches

The Kidde – ‎RF-SM-DC allows for the easy installation of an interconnected smoke alarm system without the high cost and hassle of rewiring your home. The alarms are wirelessly linked so that when one alarm is triggered, all alarms will sound. This alarm can also be placed in a detached workshop or shed and linked into the home’s interconnected system.

Most of the reviewers say that this smoke detector works as advertised. If one of the units detects smoke, all units will alarm.

A few reviewers complained that it is not compatible with different models of the Kidde brand. Some say that it arrived with defects.

The smoke detector’s dimensions are ‎7 x 9 x 10 inches. It weighs ‎14.4 ounces.

View Kidde – ‎RF-SM-DC on Amazon.

6. Best Digital Smoke Detector: X-Sense – SC07

Top Features:

  • LED indicator
  • Highly-sensitive
  • Assured quality

Technical Details:

  • Power source: Battery
  • Sensor type: Electrochemical, photoelectric
  • Warranty: 5 years
  • Weight: 11.4 ounces
  • Dimensions: 5.7 x 5.7 x 2 inches

The X-Sense – SC07 is equipped with both photoelectric and electrochemical CO sensors that work independently of each other. Provides 10 years of continuous power with a built-in lithium battery, saving on energy while remaining eco-friendly. Saves you from constantly having to change batteries or wonder if your alarm is still functioning

Most of the reviewers say that it is very easy to install and the design was superb. The build quality is awesome and the installation booklet is actually readable.

A few reviewers complained that the device is disposable when the battery dies. Some say it did not pass the inspection.

The smoke detector’s dimensions are ‎‎5.7 x 5.7 x 2 inches. It weighs ‎‎11.4 ounces.

View X-Sense – SC07 on Amazon.

7. Best Voice Alarm Smoker Detector: Kidde – KN-COSM-BA

Sale

Top Features:

  • Smart hush
  • Loud alarm
  • Dual sensor

Technical Details:

  • Power source: Battery
  • Sensor type: Ionization
  • Warranty: 10 years
  • Weight: 12.3 ounces
  • Dimensions: 1.8 x 5.6 x 5.6 inches

The Kidde – KN-COSM-BA features photoelectric & electrochemical sensing technology that operates on a 10-year, sealed lithium battery. The smart hush feature silences the fire alarm for approximately 8 minutes. The green LED on the alarm will flash every 60 seconds in standby condition.

Most of the reviewers say that it is a great product, easy to install, and it came with batteries. It’s quite sensitive and quite impressive in the way it talks between alarm signals.

A few reviewers complained that they give defective units. Some say that the batteries were not included.

The smoke detector’s dimensions are ‎1.8 x 5.6 x 5.6 inches. It weighs ‎12.3 ounces.

View Kidde – KN-COSM-BA on Amazon.

8. Best Dual-Sensor Smoke Detector: First Alert – SA320CN

Top Features:

  • Ionization sensor
  • Photoelectric sensor
  • Highly sensitive

Technical Details:

  • Power source: Battery
  • Sensor type: Photoelectric, ionization
  • Warranty: 10 years
  • Weight: 6 ounces
  • Dimensions: 5 x 5 x 2 inches

The First Alert – SA320CN helps you keep your family safe with this battery-operated smoke alarm. It requires no rewiring for installation and provides continuous monitoring even if there’s a power failure. It is equipped with both a photoelectric and ionization sensor to quickly detect both fast burning, and smoldering fires.

Most of the reviewers say that it chirps when the battery needs changing. It is sensitive. easy to install, and very convenient.

A few reviewers complained that it is unusually sensitive to changes in the environment. Some say they go off at least once a day because they are so sensitive.

The smoke detector’s dimensions are ‎5 x 5 x 2 inches. It weighs ‎6 ounces.

View First Alert – SA320CN on Amazon.

Best Smoke Detectors Comparison Table

Product namePower sourceSensor typeWarrantyWeightDimensions
First Alert – SA511CN2-3STBatteryPhotoelectric10 years1.39 pounds2 x 5 x 5 inches
First Alert – SCO5CNBatteryElectrochemical, photoelectric7 years10.5 ounces3 x 4 x 3 inches
First Alert – SA303CN3BatteryIonization10 years6.4 ounces4.3 x 4.3 x 1.9 inches
Google – Nest ProtectBattery, wiredCarbon monoxide5 years1 pound5.3 x 1.5 x 5.3 inches
Kidde – ‎RF-SM-DCBatteryIonization10 years14.4 ounces7 x 9 x 10 inches
X-Sense – SC07BatteryElectrochemical, photoelectric5 years11.4 ounces5.7 x 5.7 x 2 inches
Kidde – KN-COSM-BABatteryIonization10 years12.3 ounces1.8 x 5.6 x 5.6 inches
First Alert – SA320CNBatteryPhotoelectric, ionization10 years6 ounces5 x 5 x 2 inches

Best Smoke Detectors FAQs

What are the advantages of smoke detectors?

Properly installed and maintained smoke alarms are considered to be one of the best and least expensive means of providing an early warning of a potentially deadly fire. It could reduce by almost half the risk of dying from a fire in your home.

How do smoke detectors work?

Photoelectric alarms work using a photoelectric sensor and a light source. As smoke enters the chamber and crosses the path of the light beam, light is scattered by the smoke particles, aiming it toward the sensor, which in turn triggers the alarm.

Are smoke detectors safe?

There is no health threat from ionization smoke detectors as long as the detector is not damaged and used as directed. Do not tamper with your smoke detectors, as it could damage the shielding around the radioactive source inside of them. There are no special disposal instructions for ionization smoke detectors.

Last update on 2020-09-29 / Affiliate links / Images from Amazon Product Advertising API