About Us

Customer Services

Customer Support

Regional Access

Legal & Policies

Social

Get the App

Point your camera to download the app

Customer support

We're available 24/7 to help you!

FIRST ALERTCarbon Monoxide Detector|No Outlet Required, Battery Operated, 2-Pack, CO400

Q: Has anyone else received the CO400 with one 9 volt battery instead of the two AA batteries listed in description and on picture of packaging display?

Yes, Received the 9-Volt battery version. I live in California. I'm not a lawyer but my research shows that in California Smoke detectors and Combo Smoke/Carbon detectors must come with a 10 year lifespan battery. This law does not seem to apply to devices that only detect Carbon Monoxide like that one for sale here.

Q: Why can't this be purchased in or shipped to California?

I live in California. Yes, I received the 9-Volt battery version. I'm not a lawyer but my research shows that in California Smoke detectors and Combo Smoke/Carbon detectors must come with a 10 year lifespan battery. This law does not seem to apply to devices that only detect Carbon Monoxide like that one for sale here.

Q: the package picture shows 9-volt, but sounds like it is a crapshoot on what they will send you. which is better and lasts longer, 2AA or 1 9V? I hate taking out and putting in 9v batteries. so many to choose from. would prefer plug-in but would be too low.

I bought a package of AA batteries because this item description said it takes 2 AA. It does not. It takes (and comes with) one 9V. This is model CO400.

Q: Red light is on. Is that normal? Tested and it chirps with test. Also checked battery.

YEs, red light is normal. If red light blinks - read manufacturer's guide in link below. https://www.brkelectronics.com/pdfs/2017/10/23/803bf30c.pdf

4.6/5

Product ID: 338329207

Secure Transaction

Details

Brand
FIRST ALERT
Style
Battery
Power Source
Battery
Color
White
Product Dimensions
4"D x 9"W x
Item Weight
0.01 Ounces

Description

FIRST ALERTCarbon Monoxide Detector|No Outlet Required, Battery Operated, 2-Pack, CO400

Specifications

Enclosure Material	Carbon
Color	White
Style Name	Battery Powered
Item Weight	0.01 Ounces
Item Dimensions D x W x H	4"D x 9"W x 6"H
Sensor Type	Electrochemical
Alarm	Audible, Visual
Power Source	Battery Powered

Have a Question? See What Others Asked

Has anyone else received the CO400 with one 9 volt battery instead of the two AA batteries listed in description and on picture of packaging display?

Why can't this be purchased in or shipped to California?

the package picture shows 9-volt, but sounds like it is a crapshoot on what they will send you. which is better and lasts longer, 2AA or 1 9V? I hate taking out and putting in 9v batteries. so many to choose from. would prefer plug-in but would be too low.

Red light is on. Is that normal? Tested and it chirps with test. Also checked battery.

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving over 300 million shoppers across more than 200 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

₨1328

Duties & taxes incl.

Seychellesstore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

View all Trustpilot reviews