1. Gas Detectors & Monitors Items
  2. sku: 3421102538726713
  3. FIRST ALERT CO605B

FIRST ALERT CO605B Carbon Monoxide Alarm Detectors Battery 9V

Co605b First Alert 2 Carbon Monoxide Alarm Co Detectors 9v Battery Powered

( Brand: First Alert ), ( Part Type: Alarm Detector Battery ), ( Manufacturer Part Number: CO605B )

Review FIRST ALERT Carbon Monoxide Alarm Co Detectors 9v Battery Powered

The First Alert CO605B Carbon Monoxide Alarm Detector is a vital safety device designed to protect your home from the harmful effects of carbon monoxide (CO) gas. This compact and sleek alarm detector is designed with a modern aesthetic, measuring approximately 6.5 inches long, 4 inches wide, and 1.5 inches high, making it an unobtrusive addition to any room.

The CO605B operates on a 9-volt battery (not included) and features a digital display that shows the battery status, as well as the current CO level in parts per million (ppm). The large, easy-to-read display ensures that you can quickly and easily monitor the CO levels in your home.

This CO alarm detector uses Electrochemical Sensor Technology to accurately detect CO levels as low as 15 ppm, providing an early warning before dangerous levels accumulate. It also includes a test/silence button, which allows you to test the alarm or silence it momentarily without disabling it completely.

The CO605B is equipped with a digital silencing feature that allows you to silence the alarm for up to 8 hours, making it ideal for quieting false alarms caused by temporary CO sources, such as burning food in the kitchen. The alarm includes a loud 85-decibel siren that provides a clear and audible warning in case of a CO emergency.

This CO alarm detector is designed with a tamper-resistant locking mounting bracket that ensures the detector remains securely in place and cannot be easily removed from the wall. The CO605B also includes a low battery indicator and end-of-life warning, which alerts you when it's time to replace the battery or the entire alarm unit.

The First Alert CO605B Carbon Monoxide Alarm Detector is an essential safety device for any home, and it's easy to install and maintain. It is UL 2034 listed and meets the requirements of the CPSC standard for carbon monoxide alarms, ensuring that you have the peace of mind knowing that your home and family are protected from the dangers of CO gas.

First Alert CO605B Carbon Monoxide Alarm: A Comprehensive Analysis

The First Alert CO605B Carbon Monoxide Alarm is a widely used and trusted device designed to detect harmful levels of carbon monoxide (CO) in homes and other enclosed spaces. Let's explore the key features, benefits, and potential drawbacks of this 9V battery-operated CO alarm.

Features and Benefits:

1. Easy-to-install: This battery-operated CO alarm does not require any professional installation, making it a convenient option for homeowners.

2. Digital display: The digital readout shows the current CO level in parts per million (ppm) for easy understanding.

3. Test and reset button: The alarm includes a test button to ensure proper functionality and a reset button to silence false alarms.

4. End-of-life warning: The alarm will emit a series of beeps when the battery reaches the end of its life, providing advanced notice before the alarm fails.

5. Battery-operated: The 9V battery backup ensures the alarm remains functional during power outages.

Potential Drawbacks:

1. Battery replacement: The 9V battery may need to be replaced more frequently compared to sealed lithium batteries found in some other CO alarms.

2. Limited power source options: The CO605B is exclusively designed for 9V batteries, which may not be as readily available as other battery types.

3. Loudness: Some users have reported that the alarm's siren may not be loud enough to wake them up during an emergency.

Conclusion:

The First Alert CO605B Carbon Monoxide Alarm provides an essential safety feature for detecting carbon monoxide in your home. Its easy installation, digital display, test and reset buttons, and end-of-life warning are all valuable benefits. However, the necessity for frequent battery replacements and the limited power source options may be considerations for some potential buyers. Ultimately, the decision to purchase this CO alarm depends on your specific needs and preferences.

Recommendation:

If you are looking for a reliable, battery-operated carbon monoxide alarm with a digital display, the First Alert CO605B is a solid choice. Just be prepared for the frequent battery replacements and consider purchasing extra batteries to ensure uninterrupted protection.

part # co605b prices

  • $24.99-$29.99

specifications detectoshould:

  • brand: First Alert
  • part type: Alarm Detector Battery
  • manufacturer part number: CO605B

general detectoshould:

  • Test, Measurement Inspection > Test Meters Detectors > Gas Detectors Monitors
  • condition: New Open box

payments detectoshould:

  • other
  • credit card: Diners-club
  • wallet: Paypal

offer detectoshould:

  • availability: In Stock
  • options: Ship-to-home
  • started: December 5, 2025
  • sold: 0
  • quantity: 1

shipping detectoshould:

  • carrier: UPS, USPS
  • class: Standard, Expedited, One-day
  • type: Calculated
  • transit: 3-5 Days
  • service: UPS Ground, USPS Priority Mail, UPS Next Day Air, UPS 2nd Day Air
  • cost: $16.97

returns detectoshould:

  • time: 60 Days
  • policy: Returns Accepted
  • method: Money back
  • paid by: Buyer

seller detectoshould:

  • rating: 100.0%
  • # reviews: 22363
part type: alarm detector battery,
category: business & industrial > test, measurement inspection > test meters detectors > gas detectors monitors, sku: 3421102538726713,

First Alert CO605B Is Similar To:

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5 offers $24.99–$29.99 USD
  • Offer #1: $24.99 price + free delivery = $24.99* total. Made by the trusted brand First Alert and manufactured in the United States in 2017, this model is a top choice for ensuring your home is protected against potential carbon monoxide hazards. New in unopened boxes.FREE SHIPPING
  • Offer #2: $29.99 price + $9.14 delivery = $39.13* total. Made in the United States by the trusted brand First Alert, this detector alarm runs on a single battery with an included backup, ensuring continuous monitoring even during power outages The First Alert CAT.+$9.14 shipping
  • Offer #3: $24.99 price + $10.69 delivery = $35.68* total. I am always happy to make deals.+$10.69 shipping
  • Offer #4: $10.49 price + $20.90 delivery = $31.39* total. Keep your family safe with this easy to use plug in carbon monoxide alarm; It works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there's a power failure.+$20.90 shipping
  • Offer #5: $24.99 price + free delivery = $24.99* total. The item is new and has never been used as seen in the images. Item for sale is aFirst Alert Carbon Monoxide Plug-In Alarm with Battery Backup.FREE SHIPPING