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Member Only Item

Universal Security Instruments 2-in-1 Carbon Monoxide & Natural Gas Smart Alarm

Item #828491


Plug-In Carbon Monoxide and Natural Gas Alarm. Large, Bright Screen- Displays CO Level

Online Price
Your Price $39.99
Price Per null:
  • Shipping & Handling included *

Member Only Item

The estimated delivery time will be approximately 3 - 5 business days from the time of order.

Dual Sensing Alarm—provides protection against 2 deadly household threats: Carbon Monoxide and Natural Gas (methane). NEW Smart Alarm Technology virtually eliminates nuisance alarms. Single Installation. Double Protection. This compact plug-in alarm is perfect for new or replacement installations. Backup battery provides protection even in the event of a power outage. The large, bright, easy-to-read digital display screen shows the level of carbon monoxide detected. Patented, contemporary design blends well in any room. Peak CO level and memory feature. Combined test/silence button. 3 LED colors display status of power, CO and gas. Early warning of carbon monoxide and natural gas is best achieved by installing combination alarms on every level of dwelling, including basements. For maximum detection, install an alarm inside every bedroom, outside every sleeping area, and on every level of the dwelling. Product end-of-service life warning sounds when it is time to replace the alarm (approximately 7 years) from date of activation.


  • Recommended for kitchen use
  • Plug-In Carbon Monoxide and Natural Gas Alarm
  • Compact plug-in design—covers only one outlet
  • 120v Plug In 9 volt Energizer alkaline back-up battery (included)
  • Certified to UL Standard 2034 and 1484
  • California State Fire Marshal approved
  • 5 Year limited warranty
  • Large, Bright Screen- Displays CO Level
  • Three LED Colors – Indicate Power, CO, & Gas

  • Alarm Type: Audible and Visual
  • Brand: Universal Security Instruments

Standard shipping via UPS Ground is included in the quoted price. The estimated delivery time will be approximately 3 - 5 business days from the time of order.

*Delivery is available to Alaska, Hawaii and Puerto Rico. An additional Shipping and Handling fee will apply to shipments going to Alaska, Hawaii or Puerto Rico. This fee will be quoted at checkout. Additional transit time may be required. products can be returned to any of our more than 600 Costco warehouses worldwide.

How to Return: For an immediate refund (including shipping and handling), simply return your purchase at any one of our Costco warehouses worldwide. If you are unable to return your order at one of our warehouses, please email customer service or call our customer service center at 1-800-955-2292 for assistance. To expedite the processing of your return, please reference your order number.

If you request an item be picked up for return, the item must be packaged and available for pick up in the same manner as it was delivered. If your order was delivered "curb side", it will need to be available for curb side pick up.
If the item arrived to you in a box, it will need to be in a box at the time of pick up.

View Costco's Return Policy.

For information or a written copy of the manufacturer's warranty, please contact us at:

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