Buyer’s Guide To Smoke Detector


Blog /

First Alert Smoke Detector and Carbon Monoxide Detector Alarm

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. One button silences any nuisance alarms, and also tests detector functions, while lights indicate if the alarm detects smoke or carbon monoxide. The latching alarm indicator automatically identifies which unit initiated the alarm, even after the conditions that set off the alarm have subsided. And an end-of-life signal enhances your safety by letting you know when it's time to replace the unit. Easliy connect it to compatible BRK or First Alert alarms within a single-family residence; connecting will sound all the alarms together.

The Good Stuff:

  • Keep your family safe with this hardwired smoke and carbon monoxide alarm; the battery backup means constant monitoring, even if there's a power failure.
  • Features an electrochemical Carbon Monoxide sensing technology as well as an ionization sensor that detects the fine particles of a fast-burning fire.
  • Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85-decibel siren provides a clear, loud warning upon detection.
  • Can connect to other compatible BRK or First Alert detectors, to ensure all alarms will sound when threat 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 standards.

The Bad Stuff:

  • The alarms would randomly chirp once or twice per day.
  • Below average technical support.
  • Room name is only announced on the triggered alarm.

Sobrovo's Smoke and Fire Alarm

This unit is a photoelectric smoke alarm. The photoelectric technology ,it is more sensitive in detecting slow smoldering fires which generate light smoke, little heat and may smolder for hours before bursting into flames.


This smoke alarm dose not contain any radioactive material.Smoke alarms should be installed in every room (except the bathroom ),finished attics and basements, making sure the people in the home will be able to hear and respond to the alarm sound.

Applicable to all kinds of places:The Photoelectric Smoke and Fire Alarm is applicable to Company, Factory, Hospital,Shopping Mall, Hotel, School, Housing,Warehouse,Etc.

The Good Stuff:

  • The photoelectric smoke alarm with Photoelectric technology which is optimized to detect slow smoldering fires which generate light smoke, little heat and may smolder for hours before bursting into flames.
  • When the alarm senses products of combustion and goes into alarm, the red LED will flash rapidly(one flash per second).The rapid flashing LED and pulsating alarm will continue until the air is cleared or the test button is released.Smoke alarms can only sound their alarms when they detect smoke or detect combustion particles in the air.They do not sense heat, flame, or gas.
  • Can be installed in several minutes. Coming with screws and bracket. Powered by one 9V battery(included), it will not be affected by power outage. When an intermittent "chirp" accompanied by a red LED flash every 32 seconds indicates a low battery.
  • This smoke alarm does not contain any radioactive material. Smoke alarms should be installed in every room (except the bathroom and kitchen), finished attics and basements, making sure the people in your home will be able to hear and respond to the alarm sound.
  • If there are any problems with our products ,you can contact us ,we must reply you within 24hours as soon as possible.NOTE: Please test it once a month to ensure that the smoke alarm works properly. Please clean up the dust on the alarm every 6 months to prevent the smoke alarm from being clogged or blocked.

The Bad Stuff:

  • Doesn't detect smoke and fire predictably. 
  • Plenty of sharp loud warning but no way to turn it off without taking it off the wall and disconnecting the battery.

Kidde Battery Operated Smoke Alarm I9050

Kidde i9050 is powered by a 9-Volt battery, providing continuous protection even during power outages. Unit includes a flashing red LED to indicate the alarm is receiving power. The alarm uses ionization sensing technology. Ionization sensing alarms may detect invisible fire particles (associated with flaming fires) sooner than photoelectric sensing alarms.

The Good Stuff:

  • Easy to install smoke alarm includes a test button to verify the unit’s electronic circuitry, horn and battery function are work properly. 
  • The i9050 also includes a tamper resist feature to help deter theft or tampering. 
  • Uses ionization sensing technology. Ionization sensing alarms may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. 
  • Photoelectric sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms. 

The Bad Stuff:

  • Randomly goes off for no reason according to new buyers.
  • The alarm comes with no batteries.

Ardwolf 2 Pack Photoelectric Smoke and Fire Alarm

Ardwolf smoke alarms with photoelectric technology which is optimized to detect slow smoldering fires which generate light smoke, little heat and may smolder for hours before bursting into flames.

The Good Stuff:

  • Ardwolf smoke alarms with photoelectric technology which is optimized to detect slow smoldering fires which generate light smoke, little heat and may smolder for hours before bursting into flames.
  • This Fire detector is powered by one 9V battery(included), it will not be affected by power outage. When an intermittent "chirp" accompanied by a red LED flash every 32 seconds indicates a low battery.
  • UL Listed Battery-Powered, low power consumption, service live about 10 years. 
  • When the fire alarm detects smoke or detect combustion particles in the air it will sound their alarms and the red LED will flash rapidly. The LED light and alarm will continue until the air is cleared or the test button is released.
  • This smoke detector does not contain any radioactive material. It should be installed in every room (except the bathroom and kitchen), making sure the people in your home will be able to hear and respond to the alarm sound.

The Bad Stuff:

  • The mounting plate may not fit the smoke detector.
  • When you hit the button for test, the detector makes no sound to validate.
  • Customers encountered defective products.

Nest Protect Smoke and Carbon Monoxide Alarm

Nest Protect has been redesigned from the inside out. It has an industrial-grade smoke sensor, can be hushed from your phone, tests itself automatically, and lasts up to 10 years. And just like the original Nest Protect, it also tells you what’s wrong and can even alert your phone.

You wouldn’t put up with a rotary phone or a black and white TV. So why do you put up with alarms that just beep and chirp? Shouldn’t your alarm sense smoke and carbon monoxide? And alert your phone when something’s wrong? What if it could light your way at night? Nest Protect does.

The Good Stuff:

  • The Nest Protect is not like other smoke alarms. You no longer have to spend time worrying about whether or not your smoke detector is still working, or what the blinking lights mean; Nest Protect can tell you everything you need to know! With automatic battery self-check, the Nest Protect helps take the hassle out of dealing with smoke alarms.
  • Unlike other smoke alarm systems, the Nest Protect doesn't beep when there's danger, the Nest Protect talks to you and alerts you to what's going on. Whether it's burnt toast in the kitchen or carbon monoxide in the living room, the Nest Protect uses clear spoken messages to alert you to the danger. The Nest Protect also works with most cellular devices, allowing you to receive notifications on your phone whenever something happens.
  • Tired of getting woken up at 2 a.m. by your smoke alarm? Long before it has to chirp, Nest Protect tells you its batteries are running low with a message on your phone. With routine self-checks as well as being able to remotely test all the devices in your home; Nest Protect takes the hassle out of dealing with your smoke alarms, and helps to put your mind at ease.
  • Nest has worked hard to design thoughtful devices to help keep you safe and secure. Nest devices not only communicate with each other but also with the other smart devices around your home. Your Nest Secure can use your smart light bulbs to help get your attention in the event of an emergency; your smart washer and dryer can take the data from Nest and run the next load of laundry when energy demand is low. Look for the Works with Nest badge and let Nest handle the rest.

The Bad Stuff:

  • Few Nest detectors received by customers were unable to detect smoke and fire predictably. Randomly, a unit will go offline and never come back till I reset it, it is various units through-out the house.
  • It will be a serious pain when you are trying to get them to be stable on your network and reliably communicate to the server and each other.

Leave a Reply

Your email address will not be published. Required fields are marked *