Kidde Worry-Free Battery-Powered Electrochemical/Ionization/Photoelectric Smoke and Carbon Monoxide Detector
Kidde Worry-Free Battery-Powered Electrochemical/Ionization/Photoelectric Smoke and Carbon Monoxide Detector
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Kidde Worry-Free Battery-Powered Electrochemical/Ionization/Photoelectric Smoke and Carbon Monoxide Detector

1.2 stars out of 141 reviews
(1.2)|
141 ratings

Key item features

  • Dual Sensing: This unit combines photoelectric sensor technology for visible fire particles and an electrochemical sensor for carbon monoxide gas detection.
  • Voice Alerts: Features an 85-decibel alarm with voice alerts announcing "Fire!", "Warning! Carbon Monoxide!", or "Replace Alarm!" for end-of-life notification.
  • Long-Life Battery: Powered by a 10-year lithium battery, eliminating the need for frequent battery replacements and providing continuous coverage during power outages.
  • Smart Hush: Includes a Smart-Hush button to temporarily silence the alarm for approximately 8 minutes, useful for nuisance alarms from cooking or steam.
  • Safety Compliance: Meets requirements of UL 2034, UL217, NFPA72, NFPA101, The State of California Fire Marshal, FHA, and HUD.
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Current price is $51.00
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Comparison Chart:
Smoke & carbon monoxide alarm sensor technologyElectrochemical SensorKidde Worry-Free Battery-Powered Electrochemical/Ionization/Photoelectric Smoke and Carbon Monoxide DetectorPhotoelectric SensorKidde Hardwired Smoke & Carbon Monoxide Voice Alarm, Interconnectable with AA Battery BackupPhotoelectric SensorKidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium BatteryPhotoelectric SensorUniversal Security Instruments 10 Year Battery, Smoke, Fire, and Carbon Monoxide AlarmPhotoelectric SensorRely Essentials Battery Operated Combination Smoke & Carbon Monoxide Detector with Voice AlertsPhotoelectric SensorBRK 6 PK With Voice Hard-Wired w/Battery Back-Up Photoelectric Smoke and Carbon Monoxide DetectorElectrochemical SensorFirst Alert SMCO200V Battery-Operated 2-in-1 Smoke and CO Alarm with Voice and Location Alerts, 1046795PT
Battery life10 yearsKidde Worry-Free Battery-Powered Electrochemical/Ionization/Photoelectric Smoke and Carbon Monoxide Detector10 yearsKidde Hardwired Smoke & Carbon Monoxide Voice Alarm, Interconnectable with AA Battery Backup10 yearsKidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium Battery10 yearsUniversal Security Instruments 10 Year Battery, Smoke, Fire, and Carbon Monoxide Alarm1 yearsRely Essentials Battery Operated Combination Smoke & Carbon Monoxide Detector with Voice Alerts6 monthsBRK 6 PK With Voice Hard-Wired w/Battery Back-Up Photoelectric Smoke and Carbon Monoxide Detector-First Alert SMCO200V Battery-Operated 2-in-1 Smoke and CO Alarm with Voice and Location Alerts, 1046795PT
FeaturesLED IndicatorKidde Worry-Free Battery-Powered Electrochemical/Ionization/Photoelectric Smoke and Carbon Monoxide Detector-Kidde Hardwired Smoke & Carbon Monoxide Voice Alarm, Interconnectable with AA Battery Backup-Kidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium BatteryLess MaintenanceUniversal Security Instruments 10 Year Battery, Smoke, Fire, and Carbon Monoxide AlarmLED IndicatorRely Essentials Battery Operated Combination Smoke & Carbon Monoxide Detector with Voice AlertsVoice NotificationBRK 6 PK With Voice Hard-Wired w/Battery Back-Up Photoelectric Smoke and Carbon Monoxide DetectorLow Battery IndicatorFirst Alert SMCO200V Battery-Operated 2-in-1 Smoke and CO Alarm with Voice and Location Alerts, 1046795PT
Power typeBatteryKidde Worry-Free Battery-Powered Electrochemical/Ionization/Photoelectric Smoke and Carbon Monoxide DetectorCorded ElectricKidde Hardwired Smoke & Carbon Monoxide Voice Alarm, Interconnectable with AA Battery BackupBatteryKidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium BatteryBatteryUniversal Security Instruments 10 Year Battery, Smoke, Fire, and Carbon Monoxide AlarmBatteryRely Essentials Battery Operated Combination Smoke & Carbon Monoxide Detector with Voice AlertsBatteryBRK 6 PK With Voice Hard-Wired w/Battery Back-Up Photoelectric Smoke and Carbon Monoxide DetectorBatteryFirst Alert SMCO200V Battery-Operated 2-in-1 Smoke and CO Alarm with Voice and Location Alerts, 1046795PT
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1.2 out of 5 stars
stars141 ratings139 reviews
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Showing 1-3 of 139 reviews

Sep 26, 2025
Product hawk
2 out of 5 stars review

Middle of the night malfunction, won't stop

I bought this in 2019 and it's failed in 2025, 4 years before it's supposed to be end of life. I have read the other reviews and hours too went off in the middle of the night without any reason. Checked the whole house, there was no fire checked outside, there was no fire. The alarm stopped by itself and I tried to go back to bed. And then a few minutes later it goes off again and now there is no way to make it go quiet. The push to hush button doesn't work and it just keeps going so it's clear that this alarm is malfunctioning. Try to use the directions on the back where it says you can turn this. Dial counter clockwise to get it to stop and break a seal and break a tab underneath it to make it stop if nothing worked so I ended up taking a kitchen knife and prying it open to get the battery out and make it stop. FYI. It's a Panasonic lithium ion battery model number 9ez8, cr-2/3az. The battery itself shows no signs of swelling. Called customer care and they replaced this combination with a new one that will come in the mail in the next two weeks.

Review from Kidde
Helpful?100EFOOWWIYI52550709
Nov 11, 2021
KateO
2 out of 5 stars review

Woked great while it still worked; battery died.

We installed this product in March of 2018, and now in November of 2021 the battery is dead and we need to buy a new unit. It's worked well until now (although we haven't had any fires, so that part hasn't really been tested) but I'm frustrated that the unit needs to be replaced so soon.

Review from Kidde
Helpful?100EFOOWWIYI52550709
reply from Supplier Response

Hello KateO, Thanks for reaching out. We value your input and would like to assist if possible. This unit has a 10 year warranty. Please call Kidde support at 1-800-880-6788. Open Monday through Friday from 8:00 AM – 5:00 PM EST. They are the experts and will be able to assist. Thank you.

Mar 31, 2025
Mlee
1 out of 5 stars review

Not that great

Had this alarm for 3yrs and it goes off for no reason. The last time it went off, it would never hush. Had to discharge the battery.

Review from Kidde
Helpful?100EFOOWWIYI52550709
reply from Kidde Team

Hi there, thank you for sharing your experience with us. If you need any assistance, please do not hesitate to give us a call 1-800-880-6788 or email Kidde.Social.Care@carrier.com. We'll be happy to take a closer look into your issues.