---
product_id: 246713477
title: "Kidde AC Plug-in Carbon Monoxide and Explosive Gas Detector Alarm | Nighthawk Sensor Technology | Model # KN-COEG-3"
brand: "kidde"
price: "S$213"
currency: SGD
in_stock: false
url: https://www.desertcart.sg/products/246713477-kidde-ac-plug-in-carbon-monoxide-and-explosive-gas-detector
store_origin: SG
region: Singapore
---

# Digital LED CO level display 9V battery backup 85dB loud alarm Kidde AC Plug-in Carbon Monoxide and Explosive Gas Detector Alarm | Nighthawk Sensor Technology | Model # KN-COEG-3

**Brand:** kidde
**Price:** S$213
**Availability:** ❌ Out of Stock

## Summary

> 🚨 Stay ahead of danger with Kidde’s smart, silent guardian!

## Quick Answers

- **What is this?** Kidde AC Plug-in Carbon Monoxide and Explosive Gas Detector Alarm | Nighthawk Sensor Technology | Model # KN-COEG-3 by kidde
- **How much does it cost?** S$213 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/246713477-kidde-ac-plug-in-carbon-monoxide-and-explosive-gas-detector)

## 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

- • **Hush & Extend:** Smart-Hush silences false alarms + extension cord included
- • **Memory Recall:** Peak Level Memory tracks last CO detection or test
- • **Plug & Protect:** Effortless plug-in setup for instant home safety
- • **Reliable Backup Power:** 9V battery keeps you safe during outages
- • **Smart Digital Display:** Real-time CO levels & gas alerts at a glance

## Overview

The Kidde KN-COEG-3 is a plug-in carbon monoxide and explosive gas detector featuring electrochemical sensor technology, a clear digital LED display showing CO levels or gas alerts, and an 85-decibel alarm. It includes a 9-volt battery backup for power outages, Peak Level Memory for tracking, and a Smart-Hush button to silence false alarms. UL listed with a 7-year lifespan and 5-year warranty, it’s designed for easy installation and reliable home safety.

## Description

The Kidde Carbon Monoxide Detector, Propane, Natural, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display uses electrochemical sensor technology to detect poisonous carbon monoxide, methane gas, sewer gas, propane gas or natural gas in your home and alerts you by sounding an 85-decibel alarm & displaying the amount of carbon monoxide detected or stating "gas" on the digital display when detecting explosive gas. Setup is easy as the Kidde carbon monoxide alarm plugs into a standard, 120V AC power outlet in your home, while a 9-volt alkaline battery (included) works as a backup in the event of a power failure. When carbon monoxide is detected, the digital display shows the level of carbon monoxide the alarm is sensing and updates every 15 seconds. Peak Level Memory records the last time carbon monoxide was detected or when the unit was tested. The Smart-Hush button silences the unit for approximately 8 minutes, which is helpful when this smoke detector carbon monoxide detector combo sounds from things like routine cooking or shower steam. Extension cord (included) allows for placement on a table or shelf. Install a carbon monoxide smoke detector combo on every level of your home and near bedrooms to help keep your family safe. UL Certified with a 10-year limited manufacturer's warranty. Meets requirements of UL 2034, UL217, NFPA72, (chapter 11 2002 edition) The State of California Fire Marshal, NFPA101 (One and two family dwellings) Federal Housing Authority (FHA), Housing and Urban Development (HUD).

## 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 or states "GAS" when explosive gas is present
- 85-decibel alarm announces when carbon monoxide or explosive gas 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 lifespan of 7 years and a 5-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 |
|---------------|-------|
| ASIN | B0002EVNJ6 |
| Alarm | Audible, Visual |
| Best Sellers Rank | #76,807 in Home Improvement ( See Top 100 in Home Improvement ) #215 in Home Security Alarms |
| Brand | Kidde |
| Generic Name | Combination Carbon Monoxide & Explosive Gas Detector |
| Global Trade Identification Number | 00784908011305, 00784908113054 |
| Item Weight | 454 g |
| Item model number | KN-COEG-3 |
| Manufacturer | Kidde |
| Net Quantity | 1.0 Count |
| Number of Items | 1 |
| Power Source | Battery Powered |
| Product Dimensions | 10.2D x 10.2W x 5.1H Centimeters |
| Sensor Type | Electrochemical |
| Style | Digital |
| UPC | 783961021658 640025010112 784908113054 784908011305 |
| Upper Temperature Rating | 100 Degrees Fahrenheit |

## Product Details

- **Alarm:** Audible, Visual
- **Brand:** Kidde
- **Global Trade Identification Number:** 00784908011305, 00784908113054
- **Item Weight:** 454 g
- **Number of Items:** 1
- **Power Source:** Battery Powered
- **Product Dimensions:** 10.2D x 10.2W x 5.1H Centimeters
- **Sensor Type:** Electrochemical
- **Style:** Digital
- **Upper Temperature Rating:** 100 Degrees Fahrenheit

## Images

![Kidde AC Plug-in Carbon Monoxide and Explosive Gas Detector Alarm | Nighthawk Sensor Technology | Model # KN-COEG-3 - Image 1](https://m.media-amazon.com/images/I/31inVdY76AL.jpg)
![Kidde AC Plug-in Carbon Monoxide and Explosive Gas Detector Alarm | Nighthawk Sensor Technology | Model # KN-COEG-3 - Image 2](https://m.media-amazon.com/images/I/412etyM+A+L.jpg)
![Kidde AC Plug-in Carbon Monoxide and Explosive Gas Detector Alarm | Nighthawk Sensor Technology | Model # KN-COEG-3 - Image 3](https://m.media-amazon.com/images/I/41CTmdcdxhL.jpg)
![Kidde AC Plug-in Carbon Monoxide and Explosive Gas Detector Alarm | Nighthawk Sensor Technology | Model # KN-COEG-3 - Image 4](https://m.media-amazon.com/images/I/41QbJw6v1gL.jpg)
![Kidde AC Plug-in Carbon Monoxide and Explosive Gas Detector Alarm | Nighthawk Sensor Technology | Model # KN-COEG-3 - Image 5](https://m.media-amazon.com/images/I/41tEYprzayL.jpg)

## Questions & Answers

**Q: I smell natural gas in my house, and am wondering if that is the same as explosive gas? Will it detect natural gas?**
A: As someone who went through firefighter 1 and 2 and got certified, yes. Natural gas will be detected by an "explosive gas detector." These detectors detect when natural gas or propane is approaching a percentage of the "Lower Explosive Limit", the percentage of the gas that needs to fill the airspace for combustion to occur. Since the two gases are different but are usually  detected by the same sensor, they will go off for the gas that has a lower LEL for safety. If it goes off, leave your house imediately and call 911 for the fire department. Yes Natural gas has additives that make it smell like rotten eggs, but you can get used to this smell or it can be scrubbed entirely from the gas by dirt/soil. The latter is the cause of unexpected explosions in neighborhoods you may have periodically heard about in the news. Only way to know for sure is a detector.

**Q: is this an explosive gas and carbon monoxide detector? it only says "carbon monoxide detector" on the actual product.**
A: you may own Kidde 900-0076-01 KN-COPP-3  which looks similar but only detects carbon monoxide.

**Q: What is the sound level  I need one for basement and need to hear on ground floor ?**
A: For sure will be able to hear it.7 out of 10 sound level .

**Q: what happens if you do not use the battery at all?**
A: It beeps constantly says LB or Low Battery.  Basically annoys you to death until you unplug and get a battery

## Frequently Bought Together

- Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display
- Kidde Carbon Monoxide Detector, Plug In Wall with AA Battery Backup, Test-Hush Button
- Kidde Carbon Monoxide Detector, Plug In Wall with 9-Volt Battery Backup, Digital LED Display

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-02*