$(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

Onvis CT2 Smart Contact 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

Price

to

$25 - $49.99

$50 - $74.99

$75 - $99.99

$100 - $149.99

$150 - $199.99

Brand

X-SENSE

First Alert

SimpliSafe

Features

App Compatible

Customer Rating

Top-Rated

4 & Up

Onvis CT2 Smart Contact Sensor in Smoke & Carbon Monoxide Detectors (10)

Search all categories

Sort by:

Sponsored

Sponsored

Sponsored

Front. SimpliSafe - Smoke & Carbon Monoxide Detector - White.

SimpliSafe - Smoke & Carbon Monoxide Detector - White

Rating 4.7 out of 5 stars with 42 reviews

4.7(42 reviews)

Compare

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

INSTRUCTIONS OFF 1 TWIST
INSTRUCTIONS OFF VIST PACK 4
FOR OPERATING WEEKLY MANUAL X-SENSE MANUAL X-SENSE FCST
a PUSH .8 TO .8 TO PAINT
T: REFER : NOT REFER DO NOT
T INSTRUCTIONS OFF! TWIST INSTRUCTIONS 1 OFF TWIST
FOR OPERATING FOR OPERATING NO MEEKEY MANUAL X-SENSE MANUAL X-SENSE TEST
a PUSH OMNERS TO OWNER'S TO PAINT
REFER : NOT REFER DO NOT
IMPORTANT: IMPORTANT RF WIRELESS LINK 10-YEAR BATTERY

X-SENSE - 10-Year Battery Wireless Interconnected Smoke Detector with Photoelectric Sensor and LED Warning Light 4 Pack - White

Syndicated rating, 4.590909 out of 5 stars with 22 reviews on X-SENSE.com.

(22 reviews from X-SENSE.com)

Compare

INSTRUCTIONS FOR OPERATING MANUAL III X-SENSE OWNER'S MANUAL FOR OPERATING INSTRUCTIONS IMPORTANT: DO NOT REFER TO DO NOT REFER IMPORTANT

2 PACK

RF WIRELESS LINK 10-YEAR BATTERY

X-SENSE - 10-Year Battery Wireless Interconnected Smoke Detector with Photoelectric Sensor and LED Warning Light 2 Pack - White

Syndicated rating, 4.590909 out of 5 stars with 22 reviews on X-SENSE.com.

(22 reviews from X-SENSE.com)

Compare

Sponsored