---
product_id: 2215211
title: "First Alert Powered Alarm SCO5CN Combination Smoke and Carbon Monoxide Detector, Battery Operated, 1 Pack, White"
brand: "first alert"
price: "$168.73"
currency: USD
in_stock: true
reviews_count: 13
category: "First Alert"
url: https://www.desertcart.us/products/2215211-first-alert-powered-alarm-sco5cn-combination-smoke-and-carbon-monoxide
store_origin: US
region: United States of America
---

# Electrochemical CO sensor detects invisible carbon monoxide Battery operated with easy AA battery replacement Photoelectric smoke sensor for smoldering fires First Alert Powered Alarm SCO5CN Combination Smoke and Carbon Monoxide Detector, Battery Operated, 1 Pack, White

**Brand:** first alert
**Price:** $168.73
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay ahead of danger with smart, silent protection!

## Quick Answers

- **What is this?** First Alert Powered Alarm SCO5CN Combination Smoke and Carbon Monoxide Detector, Battery Operated, 1 Pack, White by first alert
- **How much does it cost?** $168.73 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/2215211-first-alert-powered-alarm-sco5cn-combination-smoke-and-carbon-monoxide)

## Best For

- first alert enthusiasts

## Why This Product

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

## Key Features

- • **False Alarm Fighter:** Photoelectric sensor minimizes nuisance alerts from cooking and steam
- • **Loud & Clear Alerts:** 85 dB siren with distinct sounds for smoke vs CO warnings
- • **Dual Threat Detection:** Combines smoke and carbon monoxide sensing in one sleek device
- • **Hassle-Free Installation:** Battery powered—no electrician needed, just pop in two AA batteries
- • **Lifetime Sensor Reliability:** Permanent sensors last the life of the alarm with end-of-life alerts

## Overview

The First Alert SCO5CN is a battery-operated combination smoke and carbon monoxide detector featuring advanced photoelectric and electrochemical sensors. It delivers reliable, distinct alerts with an 85 dB siren, minimizes false alarms from cooking or steam, and offers easy installation with included AA batteries. Designed for long-lasting safety, it includes end-of-life and low battery warnings, making it an essential, hassle-free device for modern homes.

## Description

Product Description The First Alert SCO5CN Combination Smoke and Carbon Monoxide Alarm features dual sensors to detect both smoke and carbon monoxide in a single device. A photoelectric sensor detects the smoke most often produced by smoldering fires, and minimizes false alarms from cooking smoke or shower steam. Additionally, the advanced electrochemical CO sensor detects carbon monoxide leaks from multiple sources, such as faulty fuel burning appliances, blocked chimneys, and generators running inside or too close to homes. A loud, 85 decibel siren alerts you to the threat; unique alarm sounds and indicator lights on its face distinguish a smoke warning from a carbon monoxide warning. This carbon monoxide and smoke detector is battery operated, so you don't need an electrician for installation. Requiring just two AA batteries and featuring an easy access battery compartment for quick changes, this smoke and carbon monoxide detector has a single button that allows you to silence a false alarm or test the unit. desertcart.com Carbon monoxide (CO) is the leading cause of accidental poisoning deaths in America, yet many people don't know they are suffering from CO poisoning until its too late. Since symptoms of CO poisoning are like the flu, you might not even know you're in danger at first. That's why a carbon monoxide alarm is an excellent way to protect your family. It can detect the CO you can't see, smell or taste in the air. The First Alert SCO5CN carbon monoxide and smoke alarm uses an electrochemical carbon monoxide sensor-the most accurate technology available. The alarm uses photoelectric smoke sensing technology which is environmentally friendlier and which reduces nuisance alarms, making it ideal for cooking areas. It is also great for sensing slow smoldering fires quickly. The permanent sensors last the lifetime of the alarm. The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. A low battery signal alerts you to replace the battery and end-of-life alarm of three chirps alerts you to replace the unit. Two AA batteries are included. 5-year limited warranty. UL listed. Not available for sale in Massachusetts.--Bree NorlanderWhat's in the Box One combination carbon monoxide and smoke alarm, two AA batteries, and user's manual. This does not contain voice feature.

Review: Buy - Excellent alarm. It was easy to install, the alerts are loud and clear, and I appreciate having both smoke and carbon monoxide detection in one unit. It feels reliable and well-made, giving some extra peace of mind. Definitely worth the purchase
Review: Easy install and shower steam does not set it off - So I needed a smoke and CO2 detector that would not go off every time someone showered. The steam was setting off the old one. This one is perfect and solved the problem. Also like that it takes standard batteries.

## Features

- Smoke and Carbon Monoxide Alarm
- alarm carb monoxide smoke co detector carbon battery includ

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000MXJ498 |
| Alarm | Audible |
| Batteries | 1 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #1,487 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Smoke & Carbon Monoxide Alarms |
| Brand | First Alert |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (28,162) |
| Date First Available | January 1, 2008 |
| Description Pile | Rechargeable lithium-ion battery included. |
| Global Trade Identification Number | 00029054856920 |
| Included Components | Carbon Monoxide Detector |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 8.8 ounces |
| Item model number | SCO5CN |
| Manufacturer | First Alert |
| Material | Carbon |
| Measurement System | Metric |
| Number of Items | 1 |
| Part Number | SCO5CN |
| Pattern | SCO5CN |
| Power Source | Battery Powered |
| Product Dimensions | 2"D x 5"W x 5"H |
| Sensor Type | electrochemical,photoelectric |
| Size | 1-Pack |
| Style | Standard Detection |
| UPC | 029054856920 |
| Voltage | 120 Volts |
| Warranty Description | ------- |

## Product Details

- **Alarm:** Audible
- **Brand:** First Alert
- **Color:** White
- **Global Trade Identification Number:** 00029054856920
- **Material:** Carbon
- **Number of Items:** 1
- **Power Source:** Battery Powered
- **Product Dimensions:** 2"D x 5"W x 5"H
- **Sensor Type:** electrochemical,photoelectric
- **Style:** Standard Detection

## Images

![First Alert Powered Alarm SCO5CN Combination Smoke and Carbon Monoxide Detector, Battery Operated, 1 Pack, White - Image 1](https://m.media-amazon.com/images/I/51938oAbWzL.jpg)

## Questions & Answers

**Q: How long do batteries last?**
A: Using the batteries that came with mine, it went 275 days before the "batteries need changing" beeping started.

**Q: Advice on false alarms? Goes off every week or so. It's in our kitchen/living room, but goes off even when we are not cooking. Goes 1 min then stops..**
A: I have this model and it always goes off.  Every time someone takes a shower, or even when cooking and no smoke.  I also have a fog machine now for Halloween and it goes crazy.    

I'm currently researching a different model because this one drives me crazy.

**Q: I have these througout my house and rental unit. Installed them about 7 years ago and many malfunctioning. Any durability mprovments since 7 yrs ago?**
A: bought mine in Dec2017. It says 7 year warranty on this unit, so I'll see.   Many CO detectors are only 5 yrs, but you can find higher quality ones (not avail on Amazon) that are good for 10 yrs and have dual sealed non-replaceable batteries (so install and forget for a decade).  I bought this because it does both CO & smoke.   I have a CO detector by our bedrooms that displays CO readings in real time above 11ppm, which is superior to this.  Even low levels of CO is hazardous, and govt regs specify an alarm to sound only if >30ppm, not lower levels.

**Q: Can the voice part not be used (says programmable)? alarm/beep only?**
A: I really wish it were. No, it will always use the bellowing voice. You can program which area the device is in, such as hallway or bedroom so the alarm will identify where the trouble is. Read the reviews carefully and believe them when they say it goes of randomly in the early hours and runs its test mode at 3am. I literally threw mine down the street at 3am after it went off for no reason the 4th night in a row.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Buy
*by A***N on November 17, 2025*

Excellent alarm. It was easy to install, the alerts are loud and clear, and I appreciate having both smoke and carbon monoxide detection in one unit. It feels reliable and well-made, giving some extra peace of mind. Definitely worth the purchase

### ⭐⭐⭐⭐⭐ Easy install and shower steam does not set it off
*by T***B on January 21, 2026*

So I needed a smoke and CO2 detector that would not go off every time someone showered. The steam was setting off the old one. This one is perfect and solved the problem. Also like that it takes standard batteries.

### ⭐⭐⭐⭐⭐ Good product
*by K***R on January 22, 2026*

Works for us, no issues over the last few months.

## Frequently Bought Together

- saf First Alert smoke and co combo
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- FireAngel Digital Carbon Monoxide Detector with 10-Year Sealed for Life Battery - FA3322 Humidity, Temperature and CO Alarm - Portable Carbon Monoxide Alarms for Home and Travel - CO Detector Monitor

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-27*