---
product_id: 246712611
title: "KN-COPP-3 Nighthawk Plug-In Carbon Monoxide Alarm with Battery Backup"
brand: "kidde"
price: "7164881₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/246712611-kn-copp-3-nighthawk-plug-in-carbon-monoxide-alarm-battery
store_origin: VN
region: Vietnam
---

# Digital CO level display 9V battery backup 85dB loud alarm KN-COPP-3 Nighthawk Plug-In Carbon Monoxide Alarm with Battery Backup

**Brand:** kidde
**Price:** 7164881₫
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay one step ahead of danger with Kidde’s Nighthawk – safety that never sleeps!

## Quick Answers

- **What is this?** KN-COPP-3 Nighthawk Plug-In Carbon Monoxide Alarm with Battery Backup by kidde
- **How much does it cost?** 7164881₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/246712611-kn-copp-3-nighthawk-plug-in-carbon-monoxide-alarm-battery)

## Best For

- kidde enthusiasts

## Why This Product

- Trusted kidde brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power Outage Proof:** 9-volt battery backup keeps you safe even when the lights go out.
- • **Smart Silence Mode:** Test-Hush button silences false alarms without compromising safety.
- • **Memory That Remembers:** Peak Level Memory logs last CO detection or test for peace of mind.
- • **Real-Time CO Monitoring:** Digital LED updates every 15 seconds so you’re always informed.
- • **Plug & Protect Instantly:** Effortless plug-in setup for immediate home safety.

## Overview

The Kidde KN-COPP-3 Nighthawk is a plug-in carbon monoxide alarm featuring an electrochemical sensor, a digital LED display for real-time CO levels, and an 85-decibel alarm. It includes a 9-volt battery backup to ensure continuous protection during power outages, a Test-Hush button for easy silencing of false alarms, and Peak Level Memory to track the last CO event or test. UL listed with a 10-year limited warranty, it’s designed for quick installation and reliable, long-term home safety.

## Description

Kidde KN-COPP-3 Nighthawk Plug-In Carbon Monoxide Alarm with Battery Backup

## Features

- Easy Installation - simply plug-in to a standard, 120V outlet in your home
- 9-volt battery backup provides protection during a power outage
- Digital LED display shows the level of carbon monoxide the CO alarm is sensing
- 85-decibel alarm announces when carbon monoxide is detected
- Peak Level Memory records the last time carbon monoxide was detected or when the unit was last tested
- Test-Hush Button makes testing the detector or silencing false alarms easy
- Extension cord (included) allows for placement on a table or shelf
- UL Listed with a 10-year limited warranty which begins when the alarm is powered on, if that date is unknown it should be assumed the alarm should be replaced.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Kidde |
| Style | Detector |
| Power Source | Battery Powered |
| Colour | White |
| Product Dimensions | 4.4D x 9.5W x 15.4H Centimeters |
| Alarm | Audible, Visual |
| Operating Humidity | 5% to 95% relative humidity, non-condensing |
| Compatible Devices | Residential |
| Upper Temperature Rating | 37.8 Degrees Celsius |
| Sensor Type | Electrochemical |
| Global Trade Identification Number | 00784908007605 |
| Material | ABS |
| Number of Items | 1 |
| Manufacturer | Kidde |
| UPC | 784908007605 |
| Department | All Ages |
| Country of Origin | USA |
| Item model number | KN-COPP-3 |
| ASIN | B00002N86A |

## Product Details

- **Brand:** Kidde
- **Style:** Detector
- **Power Source:** Battery Powered
- **Colour:** White
- **Product Dimensions:** 4.4D x 9.5W x 15.4H Centimeters
- **Alarm:** Audible, Visual
- **Operating Humidity:** 5% to 95% relative humidity, non-condensing
- **Compatible Devices:** Residential
- **Upper Temperature Rating:** 37.8 Degrees Celsius
- **Sensor Type:** Electrochemical

## Images

![KN-COPP-3 Nighthawk Plug-In Carbon Monoxide Alarm with Battery Backup - Image 1](https://m.media-amazon.com/images/I/71mgNA+iEgL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: what is the manufacture date on this? I see a lot of reviews showing old out of date units received.**
A: Ordered in January 2017.  Date of manufacture: October 2003.  People must be careful when ordering these, especially from third party sellers.  I bought one from a third party seller for a ridiculously low price -- big mistake, as the unit was over 13 years old!  (Note: The date of manufacture is on a label on the BACK of the unit, which is not visible when the unit is encased in its original packaging.  There is no way to know the date of manufacture unless you physically remove the unit from its hermetically sealed packaging and examine the label on the back of the unit.)

**Q: Can the alarm funtion be disabled? i want to use in a space where i want higher than normal levels of co2.**
A: Do NOT simply clip one wire to the transducer as in a smarter device a monitoring voltage may discover the alarm is disabled and disarm the monitor entirely. Depending on construction, you also should not remove any coating from a pcb and unsolder the correct terminal. That would probably break the alsrm and a federal statute.

**Q: The Kiddi web site says this has a 10 year life and 10 year warranty for this model900-0076. Are these old ones that your selling?**
A: My old one lasted 7years 5 days 36 minutes.  I just put the new models in and they work fine.  As far as how long they warranty 10 years.

**Q: Can someone explain how to insert the battery?**
A: Remove unit from packaging and turn unit so the AC power connector is facing you.  There is a U shaped section around the AC connector with a series of dashes on both upright section.  Push both of those towards the opposite end of the unit. This will unlock the U shaped cover.  Remove the cover.   My unit came with mounting screws and a drier pack that where inside the battery compartment.  The connector for the battery is visible after removing the items in the compartment.  Connect the battery and install the back cover, you are good to go!

## Frequently Bought Together

- Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display
- Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
- Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-02*