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Kidde

Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators, 2 Pack

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Availability: In Stock.
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Arrives Jan 28 – Jan 29
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Size: 2 Pack


Features

  • 2-IN-1 DETECTION: Alerts you to both smoke & carbon monoxide (CO) using a single, cost-effective detector.
  • HARDWIRED & 2 AA BATTERY BACKUP (Included): Operates on 120V AC wiring (installed in the ceiling) with 2 AA alkaline batteries that provide battery backup coverage during power outages.
  • ENHANCED SENSING TECHNOLOGY: Reduces false smoke alarms often caused by cooking. Comprehensively tested to meet the latest UL standards, meets UL 217 9th Edition, UL 2034 4th Edition, & FCC standards.
  • INTERCONNECT CAPABILITY: When one alarm sounds, they all sound, so you can get out faster. (Different models offer different interconnection options and requirements. See User Guide for more info.)
  • SELF-TESTING ALARM: Internal components ensure alarm is always operating as expected. Not a substitute for a manual push test, perform a button test once per week to verify alarm operation.
  • 3 LED NOTIFICATIONS: LED lights indicate alarm status, green = normal operation, amber = operating error, red = smoke or carbon monoxide detected & a loud 85-decibel alarm will sound.
  • TEST & HUSH BUTTON: Makes it easy to test the 5-inch combination detector and silence false alarms, should they occur.
  • 10-YEAR LIMITED WARRANTY: Warranty begins when the alarm is powered on. If that date is unknown, it should be assumed that alarms should be replaced.

Description

Experience the next level of fire safety with the Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Interconnectable, LED Warning Light Indicators, 2 Pack, model 30CUAR. This smoke & CO detector has enhanced sensing technology that reduces false alarms often caused by cooking and sends fast alerts that help give your family more time to get out safely. To detect carbon monoxide, an electrochemical sensor is used. This alarm offers a modern 5-inch design ideal for all living spaces such as living rooms, hallways, kitchens, & bedrooms. Comprehensively tested and designed to the latest UL standard for safety and reliability, the 5-inch smoke & CO alarm is powered by 120V AC wiring with 2 AA alkaline replaceable backup batteries (included) for continual detection even during outages. Batteries should be replaced every 6 months or when the alarm sounds a low battery chirp. In addition, it’s self- testing and easy to install with the included twist-and-click mounting bracket. This Kidde combination alarm is equipped with end-of-life notifications that will beep to remind you it’s time to replace it at the of its 10-year lifespan. Meets requirements of 9th Edition UL 217, UL 2034 4th Edition, FCC, and CSFM.

Brand: Kidde


Style: 9th Edition


Power Source: Hardwired


Color: White


Product Dimensions: 1.88"D x 5"W x 5"H


Item Weight: 12.8 ounces


Alarm: Smoke and Carbon Monoxide Alarm


Operating Humidity: 10 to 95% relative humidity (RH), non-condensing


Upper Temperature Rating: 100 Degrees Fahrenheit


Sensor Type: Photoelectric, Electrochemical


Brand: ‎Kidde


Style: ‎9th Edition


Power Source: ‎Hardwired


Color: ‎White


Product Dimensions: ‎1.88"D x 5"W x 5"H


Item Weight: ‎12.8 ounces


Alarm: ‎Smoke and Carbon Monoxide Alarm


Operating Humidity: ‎10 to 95% relative humidity (RH), non-condensing


Upper Temperature Rating: ‎100 Degrees Fahrenheit


Sensor Type: ‎Photoelectric, Electrochemical


Global Trade Identification Number: ‎82


Material: ‎Plastic


Number of Items: ‎1


Manufacturer: ‎Kidde


UPC: ‎047871328482


Part Number: ‎21032848


Item model number: ‎30CUAR


Size: ‎2 Pack


Shape: ‎Circular


Item Package Quantity: ‎1


Included Components: ‎AA batteries, Mounting Hardware, Two Alarm, User Guide


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Alkaline


Date First Available: September 9, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jan 28 – Jan 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Well made, works perfectly right after install
Size: 2 Pack
I purchased 3 Kiddie Smoke detectors and 2 Kiddie CO/Smoke detectors, all hardwired with AA battery backup. Installed all of them rather easily with the exception of having to rewire the plugs as they changed the end piece from my 10 year old Kiddie detectors, but this too was easily done. Fits on the same baseplates. They all interconnected perfectly. I tested the included backup batteries prior to install and they were all fully charged. Pushed the test button on one unit and they all briefly alarmed, then shut off by themselves. I'll report back if I get any false alarms or low battery alarms, but these units seem very well made. Please remember to write the install date on the included sticker as the 10-year lifespan starts with the date you power them up, not the manufacture date. ... show more
Reviewed in the United States on October 17, 2025 by Rick
    • Easy to install
Size: 1 Pack
This product was a replacement for a 10 year old smoke and carbon monoxide detector. I replaced 5 units in less than 15 minutes. Worked out perfectly.
Reviewed in the United States on November 5, 2025 by NKF
    • Excellent replacement detectors
Size: 2 Pack
I ordered 4 of these to replace my 10-year old Kidde interconnected voice smoke/carbon dioxide detectors. The old ones were at end of life and they were making a big, annoying fuss about it. These are the current equivalent to my previous units. The power plug is different unfortunately, Kidde did drop the ball there. They were easy enough to switch out though, just unscrew the existing wire nuts and reinstall with the new wire harness. The mounting plate is the same size as the units being replaced so no paint touchup was required. The new units themselves are slightly smaller however. A nice upgrade these new ones feature is the AA battery backup rather than the expensive 9V battery backup, a welcome change. All 4 of the new units I purchased tested good and are working fine. No false alarms or issues yet. I will update this review if anything changes. Oh, and a great price here on Amazon as compared to local big box stores. ... show more
Reviewed in the United States on July 31, 2025 by Kory
    • Good detector
Size: 1 Pack
Fast delivery easy to install. works well.
Reviewed in the United States on September 4, 2025 by Alan
    • Amazon to the rescue
Size: 2 Pack
11pm at night. Smoke Alarms go off, no fire. Try changing batteries. If not, order these from Amazon and they arrive in the morning. Easy to install, be careful burning the bacon. Had three different alarms before now all are the same with no extra tools or wiring. Thank you Amazon.
Reviewed in the United States on November 13, 2025 by E. Kennedy
    • It was easier than I thought to install
Size: 2 Pack
Instead of paying an electrician to replace my six Kidde smoke alarms for over 600 dollars, I decided to replace them myself with the new smoke and carbon monoxide alarms. I did have to change the mounting plate with the new one that entailed loosening two screws. I also bought the wire adapters since my old units were 13 years old and the wire attachments have changed. I did NOT have to do the wiring by using the adapters. I simply had to attach one end into the old wire pin and then slide the other end into the new unit. It took about 10 minutes/unit. Saved about 300 to 400 dollars and the units work great with the testing. Very satisfied. ... show more
Reviewed in the United States on November 14, 2025 by robin rosalini
    • Great upgrade
Size: 2 Pack
The quality seems far better than it’s predecessor, from the design of the detector to make it more efficient to detect to the ability to sync to other detectors in the home it looks like it’s worth the money. The base plate didn’t change so that was great no fussing with changing out mounting plate if you stick with the Kidde brand. The only flaw is the upgrade to the wiring which only added a few minutes to install and it seems like a better more sleek design so I didn’t think it was worth deducting a point. Would recommend. ... show more
Reviewed in the United States on October 11, 2025 by Nick
    • Easy to Install and Works Great
Size: 2 Pack
I purchased this hardwired smoke and carbon monoxide detector and installed it myself with no issues. The instructions were clear, and the wiring matched up perfectly with my existing setup. It only took about 10 minutes to swap out my old unit. Once installed, it tested correctly right away. I really like that it combines both smoke and CO detection in one device, which saves space and adds peace of mind. Overall, an easy DIY project and a solid upgrade for home safety. ... show more
Reviewed in the United States on August 28, 2025 by Monica R.

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