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Combination Explosive Gas & Carbon Monoxide Alarm, Digital Display, Plug-In w/Battery Backup

Marsoni M251S
Sale price$67.99
Pay 4 payments of $17.00 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Combination Explosive Gas & Carbon Monoxide Alarm, Digital Display, Plug-In w/Battery BackupCombination explosive gas & carbon monoxide alarm, with backlit digital display, versatile carbon monoxide alarm senses high levels of propane, natural methane gas & carbon monoxide, crisp backlit digital display allows you to view current & peak levels, can be remotely muted using almost any household remote control, plugs into any ac outlet for easy set up, back up battery powers unit in case of power outage, loud 85 decibel alarm, electrochemical
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 1679 reviews
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Product Reviews
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Verified Purchase
Kimmy
Grantham, US
★★★★★ 5
Effective
Size: 8" x 10" x 2"
Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 19, 2025
J
Verified Purchase
Joseph Bod
Phoenix, US
★★★★★ 5
Fits 2021 Acura TLX
Size: 8" x 10" x 2"
Amazon garage and mfg website hadn't caught up, yet: this does fit the 2021 Acura TLX SH-AWD. No problems. New way of getting access -- pinch sides of glove box and drop off of hinge. Old way required removing an access panel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 14, 2021
J
Verified Purchase
J
Chelsea, US
★★★★★ 5
Worth it.
Size: 8" x 10" x 2"
Super easy to install. The increased airflow is definitely noticeable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 1, 2024
J
Verified Purchase
Jim Russell
Los Angeles, US
★★★★★ 5
Starter
Why did you pick this product vs others?: Good replacement. 
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 20, 2025
W
Verified Purchase
william
Omaha, US
★★★★★ 5
Starter works great
Fits and works great 2005 Mercury mariner 3.0
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2025

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