Universal Security Instruments

Model MCN400B

Internet #203367044

Plug-In Combination Carbon Monoxide and Natural Gas Alarm

$25.78 /each
  • 9 out of 10 carbon monoxide incidents take place in the home
  • Natural gas leaks can be undetecable by the sense of smell alone
  • One installation protects against two deadly threats

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Product Overview

Single Installation. Double Protection. This compact plug-in alarm is perfect for new or replacement installations. Dual sensing alarm-provides protection against 2 deadly household threats: Carbon Monoxide and Natural Gas. This alarm is suitable for installation in houses, apartments and mobile homes. Early warning of carbon monoxide, natural gas is best achieved by installing combination alarms on every level of dwelling, including basements. For maximum protection, install an alarm inside every bedroom, outside every sleeping area, and on every level of the dwelling. Universal Security Instruments-Always Working To Protect Your Family.

  • Backup battery provides protection even during a power outage
  • 3 LED colors indicate status of power carbon monoxide and natural gas
  • Compact design covers only one outlet
  • Ideal for every room in your home
  • Plugs in to standard outlet, no additional mounting required
  • Fast and easy to install
  • Backup battery—provides protection even during a power outage
  • 9-Volt Eveready alkaline battery included
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

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Customer Questions & Answers

Plug-In Combination Carbon Monoxide and Natural Gas Alarm
Plug-In Combination Carbon Monoxide and Natural Gas Alarm

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Will this device beep and show blue if the battery is running low?

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June 2, 2016
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Customer Reviews

Rated 1.8 out of 5 by 6 reviewers.
Rated 1.0 out of 5.0 by CO alarm beeps every nights with no reasons CO alarm beeps once every two days with no reasons! July 10, 2016
Rated 1.0 out of 5.0 by no way to reset , and beeps all the time. junk ... beeps all the time no way to hard reset nothing.. worthless. July 17, 2016
Rated 1.0 out of 5.0 by worse product Bought three of them. 3 months 1st device started beeping every 40 seconds. 2nd device 24 months after purchase. Ive replaced the battery and still beeps every 40 seconds November 16, 2015
Rated 2.0 out of 5.0 by so so purchase I bought two of these units. they plug into a wall but have a 9 volt battery in side for backup. You have to pull out a tab to connect the nine volt. One unit I plugged into the wall, 12 feet from my stove and I believe it is working. The other one I plugged into 4 outlets through out the house and it was always going off , even in a bathroom witht the window open. I unplugged it and set it on my pool table and it still kept going off until I unplugged the 9 volt battery. I am returning it and hoping the next one works June 30, 2015
Rated 5.0 out of 5.0 by Nice compact gas sensor The delivery was quick and well packaged. The unit is compact and not intrusive when you plug into your outlet, whether kitchen counter or any wall outlet. December 10, 2014
Rated 1.0 out of 5.0 by lemon Will be returning this item, as it beeps all the time, can't turn it off! October 20, 2014
  • 2016-08-29 T17:29:40.639-05:00
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