Sales & Customer Service
Office Hours: Mon-Fri - 5:00am-5:00pm PST
Sat-Sun - 10:00am-2:00pm PST
Toll Free: 1-877-998-WEST (9378) Email: Links:
Free Shipping On All Orders Over $99

First Alert Carbon Monoxide & Smoke Alarm, 9V Battery Powered Photoelectric

First Alert SCO5B

SKU: 90129
Regular Price: $47.99
On Sale: $34.10

Click to view bundle pricing

Add 12 more to get 5% off! ($32.40 each)
Add 19 more to get 7% off! ($31.71 each)
Add 26 more to get 10% off! ($30.69 each)

Ask a Question
About this Product

Purchase 1 piece, and earn 2 Westside Dollars

View All First Alert Carbon Monoxide & Smoke Alarm

First Alert SCO5B


Product Information:

About the First Alert SCO5B Battery Powered Combination Photoelectric Smoke & Carbon Monoxide Alarm

Combining the benefits and protection of a photoelectric smoke alarm and carbon monoxide alarm, the battery powered First Alert SCO5B is your solution for a simple alarm that allows you to easily and safely meet local and state codes. This unit protects you and others from two of leading dangers within homes and buildings—CO and smoke.

One of the best features of the First Alert SCO5B is its photoelectric sensor, which significantly reduces the frequency of nuisance alerts. Plus, its electrochemical CO alarm warns people of elevated levels of carbon monoxide. The unit runs of two AA batteries, and offers you to easily identify the type of alarm due to its two distinct lights and sounds for different types of hazards.

The First Alert SCO5B also has a convenient test and silencing button, and it works within a wide temperature range of 40 degrees to 100 degrees F and a humidity range of 10 to 90 percent relative humidity. Also note that this unit is UL listed and comes standard with a five-year warranty offered directly from First Alert.


• Smoke Alarm's Photoelectric Sensor Reduces Nuisance Alarms
• Electrochemical Carbon Monoxide Alarm Warns of Elevated CO Levels
• Runs on (2) AA Batteries
• Easy Alarm Identification Through Different Horns Sounds and Lights
• Test/Silence Button
• Can be used with BRK


• Detector Type: Smoke and Carbon Monoxide
• Sensor Type: Photoelectric Smoke and Electrochemical Carbon Monoxide
• Power Source: Battery Powered
• Temperature Range: 40°F to 100°F
• Humidity Range: 10% to 90% Relative Humidity
• Certifications: UL listed

Customer Reviews

There are no reviews for this product yet. Be the first to review the product!

Write Your Own Review:

 1 star2 stars3 stars4 stars5 stars

Submit Review

Questions & Answers

How do you change the battery?

by Robert I. on 05-25-2013

The battery when low will start to chirp letting you know its fine to change it. Low BatterySilence: Temporarily silence the low battery chirp for up to eight hours.

on 10-21-2013
Please login or register before adding a question.

If you are a new customer, please register first: