Kidde 30CUA10-V Hardwired Smoke and CO Alarm with 10-Year Backup

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Product guide

Kidde 30CUA10-V Hardwired Smoke and CO Alarm with 10-Year Backup

Kidde 30CUA10-V combines smoke and carbon monoxide detection in a hardwired alarm with a built-in 10-year backup battery. Voice alerts identify the stated hazard, and hardwired interconnection can activate other compatible Kidde alarms. Customer feedback is favorable about replacement installation and battery life, but includes concerns about false alarms, durability, wiring compatibility and noise.

At a glance

Detects smoke and carbon monoxide with photoelectric and electrochemical sensors.
Hardwired operation with a built-in 10-year battery backup, including backup during power outages.
Voice alerts name the reported hazard, with an audible alarm and red LED indicator.
Hardwired interconnection is described for compatible Kidde alarms. The manufacturer says connected alarms sound together.
Manufacturer says enhanced sensing is intended to distinguish smoke from cooking or steam and reduce nuisance alarms.

Price

$67.47Save 10%

Reference price: ~~$74.97~~

Price checked: Nov 13, 2026

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Often bought together

Kidde Wiring Adapter for Hardwired Smoke & Combination Detectors, 20-9003 | Wiring Adapter for Hardwired Smoke and Combination Detectors, Easy Installation, No Rewiring, For Homes and Apartments

$5.97

Kidde Smoke Detector, Hardwired & 10-Year Battery Backup , 20SA10, 1 Pack | Wired Interconnect, No Battery Replacement or Low Battery Chirps, LED Status Lights, Ideal for Homes & Apartments

$44.97

Pros and cons

Pros

Combines smoke and CO detection in one alarm.
A sealed 10-year backup battery avoids routine backup-battery changes, according to the manufacturer.
Voice alerts indicate whether the detected hazard is smoke or carbon monoxide.
Customers report that replacement installation is easy and appreciate the battery life.

Cons

Hardwired installation depends on compatible wiring, and customers report issues with connections on some older setups.
Customer feedback includes reports of false alarms and some units not lasting long, alongside mixed views of noise.

Technical specifications

21 specifications

Identity
Brand	Kidde
Model	30CUA10-V
Alarm type	Smoke and Carbon Monoxide Detector
Sensors	Photoelectric, Electrochemical

Power and battery
Power configuration	Corded Electric
AC supply	120V AC power
Backup battery	10-year built-in battery backup

Detection and alerts
Alarm sound level	85-decibel alarm
Visual indicator	red LED light
Voice alert examples	“Fire” when smoke is detected or “Warning, Carbon Monoxide” when CO is present

Interconnection
Compatible devices	Other Kidde Interconnectable Alarms
Connection	hardwiring

Dimensions and installation
Dimensions listed	1.88"D x 5"W x 5"H
Weight listed	10.56 ounces

Environment and construction
Operating humidity	10 to 95% relative humidity (RH), non-condensing
Upper temperature rating	100 °F
Color	White
Enclosure material	Plastic
Style	Modern

Warranty and stated standards
Warranty	10-Year Limited Warranty
Standards stated by manufacturer	UL 217 10th Edition, UL 2034 5th Edition, and FCC standards

What to know before buying

The listing describes a 10-year battery backup, not a claim that the battery or alarm needs no replacement for longer than the stated service period. Manufacturer guidance says to replace the alarm after 10 years or when end-of-life alerts begin. Clean at least once a year with compressed air or a vacuum hose around openings and a dry cloth outside. Avoid water, cleaners, aerosols and paint.

Listing details to confirm

The product title and manufacturer feature text identify model 30CUA10-V, while nearby related listings name a different 30CUA10 model. The supplied listing does not establish that those models are interchangeable. Verify the exact model and wiring compatibility before purchase.

Who is it for?

A good fit for

Replacing a hardwired smoke and CO alarm where the existing wiring is compatible.
Buyers who want voice alerts that identify smoke or carbon monoxide.
Homes with other compatible Kidde hardwired interconnectable alarms.

Less suited to

Buyers who need a battery-only alarm or do not have a compatible hardwired installation.
Buyers who need confirmed compatibility with a particular older alarm or wiring connector without checking the model requirements.

Kidde 30CUA10-V Hardwired Smoke and CO Alarm with 10-Year Backup · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 1,799 ratings

5 stars70%70%
4 stars10%10%
3 stars3%3%
2 stars3%3%
1 star14%14%

Customer feedback highlights ease of replacement installation and appreciation for the 10-year battery life. Opinions are mixed on accuracy, with reports of false alarms, and some customers raise concerns about durability and compatibility with older wiring. Noise also draws differing reactions, from being audible across a home to feeling too loud. These experiences matter especially when replacing a hardwired alarm: confirm wiring compatibility, and consider the reported noise and false-alarm concerns alongside the listed voice alerts and backup power. Aggregate ratings lean positive overall, but include a notable one-star segment and do not establish why individual customers rated it as they did.

Positive themes

Customers report that replacement installation is easy.
Customers appreciate the 10-year battery life.

Mixed feedback

Customers report mixed experiences with accuracy, including false alarms.
Some customers raise durability concerns, including reports that units lasted only a year.
Customers report compatibility issues with wiring connections on older models.
Reactions to the alarm noise vary, with some finding it audible throughout the house and others finding it too loud.

Frequently asked questions

Does the Kidde 30CUA10-V detect both smoke and carbon monoxide?

Yes. The listing identifies it as a combined smoke and carbon monoxide detector with photoelectric and electrochemical sensors.

How is the 30CUA10-V powered?

The listing describes corded electric operation on 120V AC with a built-in 10-year battery backup for power outages.

Does it announce which hazard is detected?

The manufacturer says the voice alerts use “Fire” for smoke and “Warning, Carbon Monoxide” for CO.

Can it interconnect with other alarms?

The manufacturer describes hardwired interconnection with compatible Kidde alarms. Check the user guide and the existing alarm's requirements for compatibility.

When should the alarm be replaced?

Manufacturer guidance says to replace it after 10 years or when end-of-life alerts begin.