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Kidde Nighthawk Plug-In AC/DC Carbon Monoxide Alarm Detector with Digital Display KN-COPP-3

4.7 out of 5 stars 15,226 ratings
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List Price: $71.50
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Brand Kidde
Power Source Corded Electric
Color White
Item Dimensions LxWxH 6.06 x 3.75 x 1.75 inches
Upper Temperature Rating 37.8 Degrees Celsius
Sensor Type Electrochemical

About this item

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  • Peak level button – Displays the peak CO level recorded by the alarm since it was last reset or unplugged
  • Test button functions – Tests the unit for proper operation and resets the carbon monoxide alarm
  • LED operation – Blinking dot in lower right corner of display denotes normal operation
  • Ten years after the initial power up, this alarm will “beep” two times every 30 seconds to indicate that it is time to replace the alarm.
  • Note: This CO alarm is not battery operated. However, these alarms are equipped with 9 volt battery backup – the 9 volt battery is to supply short term back-up during a power outage.
  • Power source: 120VAC. Temperature range-40˚F (4.4˚C) to 100˚F (37.8˚C). Humidity range-5%-95% relative humidity (RH)
See more product details

Customer ratings by feature

Easy to install
4.84.8
Safety Features
4.84.8
Battery life
4.74.7
New & Used (37) from $24.99 & FREE Shipping on orders over $25.00

Frequently bought together

  • Kidde Nighthawk Plug-In AC/DC Carbon Monoxide Alarm Detector with Digital Display KN-COPP-3
  • +
  • Kidde AC Carbon Monoxide Detector Alarm | Plug-In with Battery Backup | Model KN-COP-DP2
  • +
  • Kidde 21026043 Battery-Operated (Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA
Total price: $72.38
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Kidde Nighthawk Plug-In AC/DC Carbon Monoxide Alarm Detector with Digital Display KN-COPP-3
Kidde 21026043 Battery-Operated (Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA
X-Sense 10-Year Battery (Not Hardwired) Smoke and Carbon Monoxide Alarm with LCD Display, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check, SC01
X-Sense 10-Year Battery (Not Hardwired) Combination Smoke & Carbon Monoxide Alarm Detector with LCD Display, Compliant with UL 217 & UL 2034 Standards, SC07
X-Sense 2-in-1 Smoke and Carbon Monoxide Detector Alarm (Not Hardwired), 10-Year Battery-Operated Dual Sensor Fire & CO Alarm, Compliant with UL 217 & UL 2034 Standards, SC06
Customer Rating 4.7 out of 5 stars (15226) 4.7 out of 5 stars (14345) 4.7 out of 5 stars (2099) 4.7 out of 5 stars (416) 4.8 out of 5 stars (299)
Price $28.03 $24.88 $39.99 $39.99 $38.99
Shipping FREE Shipping. Details FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details
Sold By Amazon.com Amazon.com X-SENSE US X-SENSE US X-SENSE US
Color White White White White White
Item Dimensions 6.06 x 3.75 x 1.75 inches 1.8 x 5.6 x 5.6 inches 6.45 x 6.14 x 2.5 inches 5.7 x 5.7 x 2 inches 6.4 x 6.2 x 2.6 inches

Product description

Product Description

Plug-In carbon monoxide alarm with battery backup.

Amazon.com

Protect your family from the dangers of carbon monoxide (CO) exposure with the Kidde KN-COPP-3 Nighthawk Plug-In Carbon Monoxide Alarm with Battery Backup and Digital Display. The Nighthawk is an easy-to-install unit that provides reliable protection against the dangers of CO. It features a digital display that shows CO levels in parts per million allowing you to see if, how, and when levels change.

callout top
KN-COPP-3 Nighthawk
Carbon Monoxide Alarm
At a Glance:
  • Plug-in unit with battery backup and digital display that shows CO level
  • Level button displays the peak CO level recorded by the alarm since it was last reset
  • Loud alarm pattern sounds when unit detects elevated CO levels
  • Direct-plug, 6-foot power cord, and table top mounting options.

  • Five-year limited warranty
callout top
Kidde KN-COPP-3 Nighthawk Carbon Monoxide Alarm

This discreet alarm is designed to fit into any standard A/C outlet in your house.
View larger.

Kidde KN-COPP-3 Nighthawk Carbon Monoxide Alarm

The easy-read digital display updates every 15 seconds to indicate any abrupt changes or alarming trends in CO levels. View larger.
Advanced Technology in an Easy-to-Install, Plug-In Design
Designed for home use, the Kidde KN-COPP-3 Nighthawk is a UL-listed, A/C-powered, plug-in CO alarm that utilizes sophisticated electronic components and sensor technology to protect you and your family from the dangers of CO. It plugs directly into a standard A/C outlet and includes a 9-volt battery backup that provides continuous monitoring of CO levels--even during power outages.

About Carbon Monoxide: The Silent Killer
The leading cause of accidental poisoning deaths in North America, carbon monoxide (CO) is often referred to as the silent killer because it's odorless, tasteless, and invisible. Carbon monoxide poisoning can come about via a number of sources, including everyday items and appliances in your home or office. And because symptoms of CO poisoning mimic the flu or other common illnesses it can often go undiagnosed.

Audible Alarm Pattern Alerts you to Elevated CO Levels
When placed on every level of your home, alarms like the KN-COPP-3 Nighthawk can help protect everyone in the house from CO exposure by giving you an unmistakable signal when levels have reached an unhealthy point. If unhealthy levels are detected, the alarm will emit four quick audible beats every five seconds until either levels decrease or the reset button is pressed.

Easy-to-Read Digital Display Shows CO Levels
The KN-COPP-3 Nighthawk is unique among traditional CO alarms because of its digital display. This display clearly shows levels of CO that the unit has detected and stored-- from 30 to 999 ppm--and it updates every 15 seconds to indicate any abrupt changes or alarming trends. The display also shows the peak CO level recorded by the alarm since it was last reset or unplugged.

LED Shows Sensor Status
With the KN-COPP-3 Nighthawk, you never have to wonder if the sensor is functioning properly. A blinking dot in the lower right-hand corner of the display denotes normal operation, so you can trust that it's working. In addition, you can test alarm function by pressing the test/reset button at any time to verify that the horn and electric circuitry are operating properly.

Convenient Mounting Options
The KN-COPP-3 Nighthawk has a low-profile design that makes it suitable for any room in your home. The detector can be plugged into any standard A/C outlet; it's plug can be snapped into the back of the unit and can be rotated so the alarm remains vertical, independent of whether the electrical socket is mounted vertically or horizontally. In addition, the alarm comes with a 6-foot extension cord, so the unit can be plugged into the wall outlet and then placed on a table or shelf. For the most thorough protection, place an alarm on every level of your home.

The UL-listed Kidde KN-COPP-3 Nighthawk has a seven-year life and is backed by a five-year limited warranty.

About Kidde: A UTC Fire and Security Brand
Renowned for global leadership in fire detection and suppression, Kidde provides solutions ranging from portable fire extinguishers to advanced industrial controls such as flame detection and explosion suppression systems. Kidde is a UTC Fire and Security brand, with a history that's rich with innovations, from the patent of the Chubb Detector Lock in 1818 to the development of the world's first wireless networked smoke detectors in 2004.

What's in the Box
Kidde KN-COPP-3 Nighthawk CO Alarm, 9-volt battery, mounting hardware, and installation guide.


Kidde KN-COPP-3 Nighthawk Carbon Monoxide Alarm

Keep your family safe by placing alarms and extinguishers in each area of the house, and by having a fire escape plan. Click here for a detailed image.

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Product information

Technical Details

Technical Specification

User Guide [PDF ]
User Manual [PDF ]
Warranty [PDF ]

Additional Information

Warranty & Support

Product Warranty: For warranty information about this product, please click here. [PDF ]

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Important information

Ingredients

MANUFACTURED BY KIDDE WITH NIGHTHAWK TECHNOLOGY

Legal Disclaimer

New in open box

Brightness

1 lm

Color Temperature

1 °C

Wattage

1 KW

Bulb Voltage

120 volts


Customer Questions & Answers

Customer reviews

4.7 out of 5 stars
4.7 out of 5
15,226 global ratings
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Top reviews from the United States

Reviewed in the United States on November 22, 2017
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695 people found this helpful
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Reviewed in the United States on October 25, 2016
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637 people found this helpful
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Reviewed in the United States on October 1, 2018
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132 people found this helpful
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Reviewed in the United States on December 14, 2015
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Top reviews from other countries

Montfleur
5.0 out of 5 stars Just in Time.
Reviewed in Canada on March 5, 2020
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54 people found this helpful
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Steven McDowell
5.0 out of 5 stars Good upgrade
Reviewed in Canada on December 18, 2016
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5.0 out of 5 stars Good upgrade
Reviewed in Canada on December 18, 2016
My previous Kidde unit (KN-COPP-3-RC) stopped working as expected at its eight-year "end-of-life" period. Fortunately we never had a CO alarm, so I can state only that there were no false alarms! For replacement, I researched this (same) model compared to another famous brand. Both advertise that they have an end-of-life timer, but neither says how long it is. A helpful customer here confirmed that the Kidde is 10 years now, so I bought two. They arrived quickly and are installed. Cosmetically, the old and new ones are pretty similar. The packaging and the sticker on the new unit state that it has a 10 year end-of-life timer. (The ad should state that, too.) A difference is that the old unit had a lithium-ion battery for backup, while the new one uses a 9V (a Duracell is provided). So, overall opinion is that these are good value and good quality.
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23 people found this helpful
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Jetsue
5.0 out of 5 stars Can Be a Life Saver
Reviewed in Canada on February 28, 2019
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5.0 out of 5 stars Can Be a Life Saver
Reviewed in Canada on February 28, 2019
There are other good models out there that can do the job. What i like about this model, is that if there is CO detected you can get an actual reading. The other models will detect but no reading is available. I prefer to see how much CO is present if detected and if an evacuation is needed. This model is a replacement of my older model that has lasted the 10 years. I have a dual heating system with oil as my backup. Anything that can have combustion, this detector is a must. Don't bargain with your life. My house has 2 levels and there is a unit on each floor.
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10 people found this helpful
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ID
3.0 out of 5 stars Great product but i sent it back for the following reason.
Reviewed in Canada on March 26, 2020
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5 people found this helpful
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Danny
5.0 out of 5 stars So far so good
Reviewed in Canada on August 20, 2019
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6 people found this helpful
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