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Price: $199.20 $299.70
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  • Carbon Monoxide Smart Alarm provides 10 years of continuous protection against the silent killer - carbon monoxide.
  • Sealed battery (included) will never have to be replaced throughout the life of the alarm.
  • Features microprocessor intelligence to virtually eliminate nuisance alarms.
  • Mount this alarm on the wall or leave it standing up on a table top.
  • 10 year limited warranty on both the alarm and battery.
  • This alarm is suitable for installation in houses, apartments, dormitories, hotels/motels and manufactured housing.
  • Meets New Laws & Legislations - This alarm exceeds industry standards, and is listed to UL Standard UL2034 and is California State Fire Marshal approved.
Manuals
The USI MC304SB Carbon Monoxide Smart Alarm provides 10 years of continuous protection against the silent killer - carbon monoxide. Perfect for new or replacement installations, this maintenance-free alarm is suitable for houses, apartments and mobile homes. The sealed battery (included) will never have to be replaced throughout the life of the co detector, giving you a decade's worth in peace of mind even in the event of a power outage. Permanent Power also saves money from battery replacements (up to $38.00 over the 10-year life of the alarm), eliminates annoying low battery chirps and helps the environment by reducing environmental waste from disposed batteries. This carbon monoxide detector features microprocessor intelligence to assist in completely eliminating nuisance alarms, a single silence/test button to quiet a non-hazardous alarm and an end-of-service life warning that sounds when it's time to replace the battery (approximately 10-years from activation). Mount this carbon monoxide alarm on the wall or leave it standing up on a table top. The quick activation battery pull tab makes it easy to install while the deactivation key switches the alarm off and makes the batteries safe for disposal. Once the co alarm is deactivated, the tamper resistant feature turns on to prevent deactivated alarms from being reinstalled.

This carbon monoxide detector conforms to UL2034 Standards. It has also been approved by the California State Fire Marshal and Federal Housing Authority (FHA) to exceed industry standards. For maximum protection, install a carbon monoxide alarm inside every bedroom, outside every sleeping area and on all levels. The USI MC304SB Carbon Monoxide Smart Alarm comes with a 10-year limited warranty that covers the battery and alarm.
MC304SB20 year battery smoke alarm
Product Details
Product Specs
UPC:
042741303040
MPN:
MC304SB
Category:
Carbon Monoxide Alarms
Product Manuals
USI Carbon Monoxide Smart Alarm with 10 Year Sealed Battery Video

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15 Customer Reviews

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USI Carbon Monoxide Smart Alarm with 10 Year Sealed Battery Reviews
L G Copeland
November 29, 2021
Verified Purchase
Good product.

Easy to set up and works immediately. I'll probably purchase more of these for the rest of my house.

Mike P
August 24, 2021
Verified Purchase
Great price

Great price on this item! Also great that you can get them in a multi pack.

Francisco R
June 1, 2021
Verified Purchase
Excellent product

Excellent product and easy to install

Steve K
May 30, 2021
Verified Purchase
Simple peace-of-mind

I purchased this for my laundry room which sits right below the gas furnace in the attic. It gives me some peace of mind to know that this will detect any CO leaks. Easy to setup and hassle-free due to the 10-year sealed battery. Pro-tip: wear earplugs when testing the alarm. It is LOUD!

Harry Swope
November 27, 2020
Verified Purchase
Monoxide Alarm

Not requiring external power is a big plus. That makes it easy to place it in an optimal location.

Heidi Smith
October 28, 2020
Verified Purchase

Love this Alarm. Small and easy to hang.

Bob Shoaf
February 12, 2020
Verified Purchase
Installed this product

The product came in a reasonable time. Easy to install. It hasn't alarmed yet, so that is a good thing, I think. I have another alarm and it hasn't gone off either, so I believe this new one is working as it should.

Janice Rickstad
November 12, 2019
Verified Purchase
USI Carbon Monoxide Alarm

Arrived promptly. Was looking for an alarm to use in new room. Easy to mount on wall. This unit should last 10 years.

Carol Wesley
September 24, 2019
Verified Purchase
Sleeping batter

Was happy to find this ten year device for table top so I can keep it right next to the bed.

Carol Wesley
September 24, 2019
Verified Purchase
Sleeping batter

Was happy to find this ten year device for table top so I can keep it right next to the bed.

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