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Kidde Nighthawk Kn-Cosm-B Combo Smoke/Carbon Monoxide Alarm - 85 Db - Flashing Led - Security Alarm - White KID9000102 pg.1422.

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Kidde Nighthawk Kn-Cosm-B Combo Smoke/Carbon Monoxide Alarm - 85 Db - Flashing Led - Security Alarm - White KID9000102 pg.1422.
Night Hawk Combination Smoke/CO Alarm w/Voice/Alarm Warning

Manufacturer Part Number: 900-0102

General Information:

Combination smoke/carbon monoxide alarm emits a voice alarm to eliminate confusion. Alerts you to which danger it senses. Offers test/reset button and flashing LED to verify alarm operation. Easy install, no wiring needed. Smoke/carbon monoxide alarm includes three AAA batteries. UL listed.

Manufacturer Kidde Fire and Safety
Manufacturer Part Number 9000102
Manufacturer Website Address
Brand Name Kidde
Product Line Nighthawk
Product Model KN-COSM-B
Product Name Nighthawk KN-COSM-B Combo Smoke/Carbon Monoxide Alarm
Packaged Quantity 1
Product Type Alarm Lock
Product UPC 784908010209
Alarm Type Security Alarm
Alarm Status Flashing LED
Sound Emission 85 dB
Battery Information:
Batteries 3 x AAA
Physical Characteristics:
Color White
Depth 1.7"
Diameter 5.8"
Weight (Approximate) 13 oz
What's in the box
  • Nighthawk KN-COSM-B Combo Smoke/Carbon Monoxide Alarm
  • 3 x AAA Batteries
Certifications & Standards


Recycled No
Recycled Content 0%
Post-consumer-waste% 0%
Assembly Required No
Country of Origin China
Limited Warranty 5 Year

Q and A
QuestionsSort By:Posted DateRespones
Nighthawk detector started beeping every so many seconds, changed all of the batteries and it still is beeping. Any suggestions? It is less than 5 years old. Thanks!
Question by Teri
If you are lucky it may be the batteries. If the unit is less that 7 years old its battery or dust. Look on the back side of the unit and search for the DOM(date of Manufacture)If its more than 7 years its dead. These cheap detectors have a timer circuit that starts a 30-sec chirp cycle after approx 7 and a half years. They are designed to do this and can not be reset. So check the date and go to the store.
Answered by ZelmoQuad posted on 9/20/2012
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Please contact Kiddie 800-654-9677 for troubleshooting assistance.
Answered by Expert posted on 10/29/2009
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Hi there, My detector keeps beeping and won't stop.. no voice activation... no stove or anyone on in the house.. what is the problem? it's 6 years old... thanks,
Question by Mien
Have you changed the batteries recently? Being six years old, it is quite possible the unit simply needs to be replaced. The warranty was five years.
Answered by Jim Eadie posted on 10/28/2009
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This product was added to our catalog on Tuesday August 20, 2013 and last updated on Saturday April 19, 2014

All products are brand new and factory sealed unless otherwise stated.
 *** Disclaimer- Information is supplied by the Manufacturer. The image, including color, may differ from actual product appearance. CompSource, Inc. is not responsible for data. ***

  When every second counts, you'll have your warnings spoken to you in a loud-volume voice: “Fire, Fire!” or “Warning! Carbon Monoxide!” Two-alarm system also announces “Low Battery” when batteries need changing. Also includes chirp signal, flashing LED and test/reset button. Uses three AA batteries (included). Power Source(s): 3 AA; Mounting: Universal Mounting Bracket; Quantity: 1 each.
Global Product Type: Smoke/CO Detectors-Smoke/Carbon Monoxide Detector
Power Source(s): 3 AA
Mounting: Universal Mounting Bracket
Quantity: 1 each
Compliance Standards: UL Listed
Pre-Consumer Recycled Content Percent: 0%
Post-Consumer Recycled Content Percent: 0%
Total Recycled Content Percent: 0%

Options and Accessories

Ground (EST. Arrival Date between Tuesday, April 22 - Monday, April 28) = $8.99
Two Day Air (EST. Arrival Date on Tuesday, April 22) = $26.00
Standard One Day (EST. Arrival Date on Tuesday, April 22 after 3PM) = $35.00
Priority (EST. arrival Date on Tuesday, April 22 in the AM) = $45.00
U.S Mail Priority (AA,AE,AP only) = $30.50

Shipping dates are best estimates based on product location and may vary with holidays.

* Some destinations are subject to Applicable State/Duty Taxes

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    900-0102 Kiddie - Nighthawk Kn-cosm-b Combo Smoke/carbon Monoxide Alarm 9000102