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OLUNCLE

4 Pack Smoke and Carbon Monoxide Detector with Test Button, 85dB Loud Beep, LCD Display, Battery-Operated Smoke Detector Carbon Monoxide Detector Combo for House, Apartment, Kitchen, Garage Use

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$65.59 Why this price?
4th of July Sale · 20% off was $81.99

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Color: White 4


Features

  • Equipped with advanced photoelectric and electrochemical sensors, this smoke and carbon monoxide detector responds swiftly to both slow-burning fires and harmful carbon monoxide gas. It's designed for early warning for your family day and night
  • The large LCD of smoke detector shows real-time carbon monoxide levels when CO is detected. In standby mode, the screen stays off to save energy while the green LED blinks once every 60 secondsensuring normal function without disturbing your rest
  • This smoke detector carbon monoxide detector combo delivers an audible alert louder than 85dB along with flashing red LED signals when smoke or CO reaches hazardous levelsgiving you time to react fast in emergencies
  • Three indicator lights of smoke alarm keep you informed: green for normal operation, red for smoke/CO alerts and low battery warnings, and yellow to show fault status. Stay in control with clear visual signals anytime
  • Use the convenient test button to check the battery and alarm functions of your combination smoke carbon monoxide alarm detector. Recommended for bedrooms, basements, kitchens, and living spaces for complete home coverage

Brand: OLUNCLE


Style: Modern


Power Source: Battery Powered


Color: White 4


Product Dimensions: 1.3"D x 4.1"W x 4.1"H


Item Weight: 0.91 Pounds


Alarm: 85 dB


Number of Items: 4


Manufacturer: OLUNCLE


Power Source: Battery Powered


Alarm: 85 dB


Product Style: Modern


Color: White 4


Item Dimensions D x W x H: 1.3"D x 4.1"W x 4.1"H


Item Weight: 0.91 Pounds


Brand: OLUNCLE


Model Number: OL0917U


Manufacturer: OLUNCLE


Item Type Name: Carbon Monoxide Alarm


Built-In Media: 4 Sets of Smoke and Carbon Monoxide Detector


Frequently asked questions

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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • They work
Color: White 4
They work very well,and they were easy to install.
Reviewed in the United States on February 13, 2026 by Terry Lee Thompson
    • Small but mighty
Color: White 1
This Smoke and CO detector is smaller than our old one but it's small and mighty. It has a loud warning system that you can hear from the kitchen to upstairs. This was a reasonably priced. It comes with installation instructions. I liked this enough that I bought 2 more.
Reviewed in the United States on February 12, 2026 by Lizzie-Gee
    • Would buy again
Color: White 2
Works great in rv just don't like the blue light it blinks and is bright but was very easy to hook up and the battery have bin in 6 months and r still working
Reviewed in the United States on November 12, 2025 by Tina Lenhart
    • Having these saved me and my family!
Color: White 2
Review Image by Amazon Customer
Review Image by Amazon Customer
This item SAVED my life!! Make sure to always buy a detector with a digital reader. 1-50ppm should be checked immediately. Anything above 50ppm is a toxic level! This went off at 57ppm! My furnace heat exchanger had 6-7 cracks and holes and was leaking the poisonous gas into my home. Praise God we’re still alive! ... show more
Reviewed in the United States on March 23, 2026 by Amazon Customer
    • This product is an exceptional product and overall value.
Color: White 1
This product, including excellent instructions (grammatically) is exceptional. The functions and thorough instructions really stand out from other units. This is one of the many products I have purchased online over 25 years that I feel could easily be sold for a higher price as it offers more than most of the competing products in its category. ... show more
Reviewed in the United States on March 13, 2026 by Pete Brown
    • Easy installation
Color: White 2
Review Image by Angie
Easy install. They seem to work good. No alerts😊
Reviewed in the United States on February 13, 2026 by Angie
    • Good value
Color: White 2
Easy to install, came with batteries and needed screws with anchors. They look good, and could save lives. I like that it's a combo smoke/ CO detector. Some of these other reviews 😂 it's CO. Carbon MONoxide. It is not CO2, CO2 is Carbon Dioxide
Reviewed in the United States on November 11, 2025 by JDH
    • I recommend it
Color: White 1
I love it. It was easy to install and take AA batteries. I recommend Duracell batteries. The batteries that came with this are not reliable and they are cheap. It has a loud volume.
Reviewed in the United States on December 8, 2025 by ScuDan

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