Shop All Savings
Appliances
Bath & Faucets
Blinds & Window Treatment
Building Materials
Lumber & Composites
Cleaning
Decor & Furniture
Lighting & Ceiling Fans
Doors & Windows
Electrical
Flooring & Area Rugs
Hardware
Heating & Cooling
Kitchen & Kitchenware
Lawn & Garden
Outdoor Living & Patio
Paint
Plumbing
Seasonal Decor
Smart Home
Storage & Organization
Tools
Automotive
Furniture
Gift Cards
Credit Cards
View All Home Services
Tool Rental
Benefits & Services For the Pro
Project Calculators
View All DIY Projects
Local Ad
Store Finder
Site Map
#1 Home Improvement Retailer
Select store
...
...
Cart
Select store
...
...
Shop All
Services
DIY
Me
Cart
Home
/
Electrical
Electrical
47 Results
Alarm/Detector Features: Battery Back-Up
Sort by:
Top Sellers
Top Sellers
Most Popular
Price Low to High
Price High to Low
Top Rated Products
Get It Fast
In Stock at Store Today
Free 1-2 Day Delivery
Next-Day Delivery
Availability
Show Unavailable Products
Department
Electrical
Fire Safety
Brand
Kidde
Gentex
Universal Security Instruments
Airthings
Price
to
Go
$10 - $20
$20 - $30
$30 - $40
$40 - $50
$50 - $100
$100 - $150
$150 - $200
$200 - $250
Special Values
+ View All
Product Height (in.)
to
Go
Less than 5
5 - 10
Works With
Alexa
Google Assistant
Proprietary App
No additional compatibility
IFTTT
Smart Home
Smart Home Enabled
Best Seller
$
69
.
97
/bundle
(
$17.49
/unit
)
(4480)
Model# 21030967
Kidde
Firex Smoke Detector, Hardwired with nine-V Battery Backup & Front-Load Battery Door, Smoke Alarm, 4-Pack
Shop this Collection
Add to Cart
Compare
Top Rated
$
74
.
97
Buy More, Save More
See Details
(413)
Model# 21029893
Kidde
10 Year Worry-Free Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alarm and Ambient Light Ring
Add to Cart
Compare
$
44
.
97
$54.97
Save
$10.00
(18%)
Buy More, Save More
See Details
(508)
Model# 21032251
Kidde
Code One Hardwired Interconnectable Smoke & Carbon Monoxide Detector with AA Battery Backup
Add to Cart
Compare
$
184
.
00
(
$61.33
/unit
)
(723)
Model# 21032084
Kidde
Firex Smoke and Carbon Monoxide Detector, Hardwired with AA-Battery Backup and Voice Alert, (3-Pack)
Add to Cart
Compare
Top Rated
$
24
.
97
Buy More, Save More
See Details
(2487)
Model# 21029886
Kidde
Firex Smoke Detector, Hardwired with 9-Volt Battery Backup & Front Load Battery Door, Adapters Included, Smoke Alarm
Shop this Collection
Add to Cart
Compare
Top Rated
$
69
.
97
Buy More, Save More
See Details
(685)
Model# 21032082
Kidde
Hardwired Interconnectable Smoke and Carbon Monoxide Detector with AA Battery Backup and Voice Alerts
Add to Cart
Compare
$
44
.
97
Buy More, Save More
See Details
(265)
Model# 21029894
Kidde
10 Year Worry-Free Hardwired Smoke Detector with Voice Alarm and Ambient Light Ring
Add to Cart
Compare
$
54
.
97
Buy More, Save More
See Details
(707)
Model# 21029623
Kidde
Firex Plug-in Carbon Monoxide, Propane, Natural and Explosive Gas Detector, 9-Volt Battery Backup & Digital Display
Shop this Collection
Add to Cart
Compare
$
64
.
99
/case
(
$10.83
/unit
)
(1482)
Model# 21005927
Kidde
Firex Smoke Detector, Hardwired with 9-Volt Battery Backup, Smoke Alarm, 6-Pack
Add to Cart
Compare
$
31
.
97
Buy More, Save More
See Details
(1390)
Model# 21029713
Kidde
Firex Plug-In Carbon Monoxide Detector, AA Battery Backup, CO Detector
Shop this Collection
Add to Cart
Compare
$
89
.
97
Buy More, Save More
See Details
(201)
Model# 21031042
Kidde
Smart Smoke and Carbon Monoxide Detector, Hardwired with Voice Alert
Add to Cart
Compare
$
84
.
97
(205)
Model# 21028759
Kidde
10 Year Worry-Free Hardwired Combination Smoke and Carbon Monoxide Detector with Wire-Free Voice Interconnect
Add to Cart
Compare