$(csi.user.businessName)

Main Content

Loading...

Early Black Friday Deals & DoorbustersEnds Nov. 15.Shop now

Skip to content Go to Product Search

Visit our Support Center
Check your Order Status
Shipping, Delivery & Store Pickup
Returns & Exchanges
Price Match Guarantee

Order & Purchases

Check Order Status
Shipping, Delivery & Pickup
Returns & Exchanges
Price Match Guarantee
Product Recalls
Trade-In Program
Gift Cards

Payment Options

My Best Buy® Credit Card
Pay Your Bill at Citibank
Lease to Own
Buy Now, Pay Later
Best Buy Business Financing

Support & Services

Visit our Support Center
Schedule a Service
Manage an Appointment
Protection & Support Plans
Haul Away & Recycling
Contact Us

Rewards & Membership

My Best Buy Memberships
View Points & Certificates
Member Offers

Partnerships

Sell on Best Buy Marketplace
Advertise with Us
Affiliates: Creators & Publishers
Best Buy Health
Best Buy Education
Best Buy Business
Partner+

About Best Buy

Corporate Information
Careers
Corporate Responsibility
Sustainability

Sign in or Create Account

Get the latest deals and more.

Email Address

Best Buy appLearn more ›

Best Buy Canada

Accessibility Terms & Conditions Privacy Interest-Based Ads State Privacy Rights Health Data Privacy Do Not Sell/Share My Personal Information Limit Use of My Sensitive Personal Information Targeted Advertising Opt Out CA Supply Chain Transparency Act

In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.

Black Friday Deals

Deal of the Day

My Best Buy Memberships

Best Buy Business

Best Buy Gamers

Motion Sensor search results

Filters

Skip To Results

Get it fast

Pickup · Ready todaySelect Store

Shipping · Get it today55423

Sold & shipped by

Best Buy

Category: Smoke & Carbon Monoxide Detectors

Brand

First Alert

X-SENSE

Ultrahuman

Price

to

$50 - $74.99

$100 - $149.99

$150 - $199.99

$250 - $499.99

Features

App Compatible

Plug-In

Battery Backup

Bluetooth

Color

White

Gray

Multi

Silver

Power Source

Battery-powered

Hard wired

Plug-in

Customer Rating

Top-Rated

4 & Up

Motion Sensor in Smoke & Carbon Monoxide Detectors (7)

Search all categories

Sort by:

Sponsored

Sponsored

The text on the image reads: "ALARM TEST TO PUSH SMOKE & ALARM AIR FRESH TO MOVE PUSH TO ALARM SILENCE POWER."

First Alert - Smoke and Carbon Monoxide Detector Battery Powered - White

Rating 4.1 out of 5 stars with 157 reviews

4.1(157 reviews)

Compare

Front. Ultrahuman - HOME - PM1, PM2.5, PM10, and CO Particulate Sensor - VOC, CO, CO2 HCHO, Smoke, Noise, Motion, and Light Detector - Silver.

Ultrahuman - HOME - PM1, PM2.5, PM10, and CO Particulate Sensor - VOC, CO, CO2 HCHO, Smoke, Noise, Motion, and Light Detector - Silver

Syndicated rating, 4.857143 out of 5 stars with 7 reviews on Ultrahuman.

(7 reviews from Ultrahuman)

Compare

Front. First Alert - Plug-In Explosive Gas and Carbon Monoxide Alarm - White & Gray.

First Alert - Plug-In Explosive Gas and Carbon Monoxide Alarm - White & Gray

Rating 4.6 out of 5 stars with 47 reviews

4.6(47 reviews)

Compare

The text on the image reads: "ALARM TEST TO PUSH SMOKE & ALARM AIR FRESH TO MOVE PUSH TO ALARM SILENCE POWER." This text is grouped and corrected as follows:

"ALARM TEST TO PUSH SMOKE & ALARM AIR FRESH TO MOVE PUSH TO ALARM SILENCE POWER."

First Alert - Smoke and Carbon Monoxide Detector Hardwired - White

Rating 4.1 out of 5 stars with 171 reviews

4.1(171 reviews)

Compare

Sponsored