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Universal Security Carbon Monoxide and Natural Gas Alarm, Model MCND401B

Item #417810 Universal Security
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Product Information:

Single Installation. Double Protection! The Universal Security MCND401B Carbon Monoxide & Natural Gas compact plug-in alarm is perfect for new or replacement installations. The Dual Sensing Alarm provides protection against two deadly household threats: Carbon Monoxide and Natural Gas (methane).

Its microprocessor intelligence is designed to eliminate nuisance alarms caused by non-hazardous sources. In the unlikely event of a nuisance alarm, the silence feature quiets a non-hazardous alarm. The battery backup provides protection in the event of a power outage.

The display shows carbon monoxide PPM (parts per million) levels as well as “GAS”. It also recalls the peak CO level recorded and displays status of alarm, power, CO and gas. Includes 9V battery.


  • Plug-in 120 Volt AC operated - no wiring required

  • 9 Volt battery backup

  • Fast & easy installation 

  • Compact design - covers only one outlet

  • Bright, easy-to-read digital display

  • Displays peak CO level

  • Test/Reset button

  • 3 LED's indicate Power, Gas, CO

  • Product end-of-service life warning

  • Quick activation battery pull tab

  • Loud 85dB alarm

  • Meets UL2034 & UL1484

  • California State Fire Marshal approved

  • 5 year limited warranty

  • Specifications

  • Sensor Type: Solid state, metal oxide

  • Primary Power: 120 volt AC 60 Hz

  • Battery Backup: 9 volt alkaline battery

  • Audible Alarm: 85 dB at 10 feet

  • Temperature Range: 0º F to 120º F (-18º C to 48º C)

  • Humidity Range: 10% to 95% RH

  • LED: 3 LED’s: alarm, power, CO, gas and service

  • Size: 4.38" x 1.55" x 2.50"
  • Shipping / Billing Info:

    This product ships direct from the manufacturer:

    • Your order will ship in approximately 2-4 business days.
    • This product is considered special order. Your account will be charged when you place your order.
    • Express or overnight shipping is not available for this product.
    • Ships by Ground to the 48 contiguous states. Cannot ship to Alaska, Hawaii, PO Boxes, APOs, US Territories, Canada or other foreign countries.

    Return Information

    Contact Woodcraft Supply customer service at 1-800-535-4482 for return details. Return Goods Authorization (RGA) required prior to return. Customer pays return freight.

    When returning product, please include the invoice number or customer number and refer to the back of the invoice for shipping instructions.

    If purchased at a Woodcraft Store, please return the item directly to the store where your purchase was made.

    Warranty Information
    Each product has its own warranty period. See product details. Contact Woodcraft Supply at 800-535-4482 for warranty assistance.
    California Residents: Click here for Proposition 65 information.