Are First Alert carbon monoxide detectors good?


Why you should buy First Alert carbon monoxide detectors? Alarms for carbon monoxide aim to provide an early warning by detecting the deadly gas. It’s crucial to get outside as quickly as possible if there is a carbon monoxide leak. First Alert CO detectors can assist in giving you and your family the early notice need to leave your house in an emergency, and every second counts. Are First Alert carbon monoxide detectors good?

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Are First Alert carbon monoxide detectors good?

Various option

The First Alert Store offers a wide variety of alternatives when it comes to choosing a smoke alarm for your home. The First Alert provides smoke and fire protection in a variety of ways, whether it’s the simple installation and dependable security of a hardwired smoke alarm or the expanded coverage of an interconnected combination alarm.

CO levels

The electrochemical sensor of the First Alert CO5120BN can pick up carbon monoxide concentrations greater than 30 ppm. Over 70 ppm, symptoms become more obvious.

Battery backup

This Kidde model has a battery backup, like the majority of comparable products, to provide ongoing monitoring even in the event of a power outage. It uses two AA batteries, which you might already have on hand more frequently than the backup 9-volt batteries some other plug-in carbon monoxide detectors need.


If the unit detects carbon monoxide levels that are higher than acceptable levels, it will emit an 85-decibel warning whether it is powered by electricity or batteries.

Color indicator

The light is green when everything is working normally, but it turns red when there is an alarm, the batteries are running low, or the equipment has reached the end of its useful life.

Long battery life

This combined smoke and carbon monoxide detector’s sensors have a 10-year lifespan, which is useful to know if you’re installing the device in a state where smoke detector life spans are regulated.

Reduce of false alarm

Smart sensing technology has been added. This was included to lessen the possibility of false alerts brought on by false alarm triggers, such as steam from cooking. When establishing a smoke defense system, this battery-operated smoke detector will notify you to genuine hazards, providing more peace of mind.

Frequency of change

If the batteries in your carbon monoxide detector are replaceable, you should swap them out at least once every six months. Carbon monoxide alarms don’t last forever, even if you regularly change the batteries. Although they have a lifespan of 5 to 7 years, it is crucial to consult your user handbook. Replace the CO alarm entirely five to seven years later.

First Alert carbon monoxide detectors alternative

Kidde Battery-Powered Carbon Monoxide Detector

  • Installation on a tabletop or on a wall
  • Simple battery compartment
  • Alarm sounds and an LED flashes.
  • No digital display

A flashing LED light indicates if an alert is activated or whether the device is performing as expected (green light) (red light). On this plain device, there aren’t many other functions to mention, but it works simply and has a 10-year lifespan.

A portable carbon monoxide monitor that is small and portable saves space. We advise the battery-operated Kidde KN-COB-B-LPM, which fits in the palm of your hand and runs on two AA batteries. On a tabletop, it doesn’t take up a lot of room. Alternatively, you can mount it on a wall if there is enough room for its 4.5 x 2.75 x 1.5-inch footprint.

Despite its small size, this CO detector has a typical 85-decibel alarm that is loud enough to let you know if there are abnormal amounts of CO present.

Editor’s recommendation

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