Customer Reviews for Kidde Hardwire Smoke and Carbon Monoxide Combination Detector with 9V Battery Backup, Voice Alarm, and Photoelectric Sensor

Internet #202188174

Model #21029888

Store SKU #714543

Store SO SKU #1000318670

  • Smoke and CO alarm requires hardwire installation
  • 9V battery backup for protection even during power outages
  • All interconnected alarms will sound when one alarm goes off

Customer Reviews

  • 952 Customer Reviews
  • 4.6 out of 5 stars overall
94% of customers recommended.
Overall Ratings
5star-icon(744)
4star-icon(143)
3star-icon(21)
2star-icon(12)
1star-icon(32)
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We replaced our home’s original smoke detectors and upgraded to include CO monitoring. Voice aler...
We replaced our home’s original smoke detectors and upgraded to include CO monitoring. Voice alert and alarm sound interfaces with all the other house alarms. One in the package was found to be malfunctioning during the test and we easily exchanged it at our local Home Depot store.
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These are hardwired devices not to run on battery power alone. Battery is for power outage only....
These are hardwired devices not to run on battery power alone. Battery is for power outage only. Very easy to install if you're a little DIY . Just remember you are on a ladder to continue to be alert to that. Voice warning for FIRE AND CARBON MONOXIDE. A third wire available for communication to other devices.
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So far so good. It is an exact replacement for the original,but more practical for replacing the ...
So far so good. It is an exact replacement for the original,but more practical for replacing the battery.
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I like that they are very loud an they have a Light indicator. Money well spent!
I like that they are very loud an they have a Light indicator. Money well spent!
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Easy to install, linkable with the other smoke detectors.
Easy to install, linkable with the other smoke detectors.
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Excellent product and good thing we upgraded, love the newer features and will tell you what caus...
Excellent product and good thing we upgraded, love the newer features and will tell you what caused the alarm to go off. I had a green light that would flash every 16 sec, by pressing the reset button it told me what caused it. Very happy and interconnected feature works really well and loud.
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I have over 600 of these in condo units. They are easy to install, reliable and convenient with r...
I have over 600 of these in condo units. They are easy to install, reliable and convenient with replacement signal and voice alarms. Quality product
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Bought to replace old fire alarms. Be sure to buy adapters if you need them as this 3 pk does NOT...
Bought to replace old fire alarms. Be sure to buy adapters if you need them as this 3 pk does NOT come with them and make sure to buy the correct adapters. Make sure to plug them in all the way to hear the click otherwise you may get some false alarms. Only gave 4 stars because adapters were not included only wires to rewire.
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Eady to install. Voice warning, which i like. Worth every penny
Eady to install. Voice warning, which i like. Worth every penny
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Yes, I would recommend these products. We had two different types, same brand. We just swapped th...
Yes, I would recommend these products. We had two different types, same brand. We just swapped them for the new models. The old ones were 2011. Quick and easy, so far so good. I'm very happy.
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