First Alert Battery Operated Smoke and Carbon Monoxide Alarm-SCO5CN at The Home Depot
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First Alert

Model # SCO5CN

Internet # 202433891

Battery Operated Smoke and Carbon Monoxide Alarm

First Alert Battery Operated Smoke and Carbon Monoxide Alarm

This item has been discontinued.
The Home Depot no longer carries this specific product.

$29.97 / each
Item cannot be shipped to the following state(s): AK,GU,HI,PR,VI


In Stock



Model # SCO5CN

Internet # 202433891

The First Alert SC05CN Combination Smoke Alarm and Carbon Monoxide Detector helps protect you and your family from two deadly threats: fire and carbon monoxide. Fire is a deadly threat to every household; it can strike anywhere, any time. Carbon monoxide (CO) is a leading cause of accidental poisoning deaths in America, yet many people don't know they are suffering from CO poisoning until its too late. Symptoms of carbon monoxide poisoning are like the flu, and you might not even know you're in danger at first. This dual smoke and carbon monoxide alarm is an excellent way to protect your family. The SCO5CN uses an electrochemical carbon monoxide sensor, the most accurate technology available. The alarm uses photoelectric smoke sensing technology which reduces nuisance alarms, making it ideal for cooking areas. Photoelectric smoke alarms are great for sensing slow smoldering fires quickly. The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. The SCO5CN alarm uses different 85-decibel horns and lights depending on whether it's alerting you to smoke or carbon monoxide. A low battery signal alerts you to replace the battery and end-of-life alarm of three chirps alerts you to replace the unit. Two AA batteries are included. 7-year limited warranty. UL listed.

  • Dual smoke & carbon monoxide detector technology
  • Photoelectric smoke sensing technology
  • Mute button for silencing false alarms
  • EZ access door to replace batteries
  • Low battery signal mute
  • Electrochemical CO detector
  • End of detector life timer
  • 2 AA batteries included
  • Loud 85 dB alarm
  • 7-year limited warranty
  • Meets UL217 & UL2034 standards for combination detectors
  • America's most trusted brand in home safety

Info & Guides

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Alarm Sensor Type  Dual-Sensor  Alarm Type  Smoke 
Alarm/Detector Features  No Additional Features  Assembled Depth (in.)  5 in 
Assembled Height (in.)  2 in  Assembled Width (in.)  5 in 
Battery Back-Up  Yes  Battery Power Type  Alkaline 
Battery Size  AA  Certifications and Listings  1-UL Listed 
Commercial / Residential  Commercial / Residential  Connector/Contact Type  None 
Electrical Product Type  Carbon Monoxide Detector  Included  Batteries 
Returnable  90-Day  Voltage (volts)  1.5 


Rated 4.3 out of 5 by 51 reviewers.
Rated 5 out of 5 by Very pleased with this product I had finally had it with trying to put 9 volt batteries in a smoke alarm over my head while standing on a ladder. I selected First Alert because it uses easy to insert AAs and because my 20 year old alarms had not included a carbon monoxide detector. They were easy to install, even for this senior female. It's hard to tell how well they work. I hope I never have to find out, but I feel much safer with new alarms installed and I'm happy with the quality. February 18, 2014
Rated 5 out of 5 by Great product, great price I purchased this product because it had the dual function for both CO2 and smoke. I wanted the photoelectron smoke detector to stop false alarms in the kitchen and so far it has done the trick. The unit I put upstairs outside the bathroom has actually chirped from the steam after a hot shower. I run the exhaust fan and I can't see the steam however the smoke detector does. Impressive. April 16, 2013
Rated 5 out of 5 by A Super Buy This product so easy to install and works very easily. The problem with this unit is that is has a self testing that activates at any given time, even in the middle of the night. So many Customers are complaining by saying its not a good unit. On the contrary is an excellent unit I have 6 throughout my house for the last 5 years up to date. What I love about the unit is that you can program it to speak the area like, Hallway, Living room, Bedroom where the problem is. So when the unit does a self test in the middle of the night its okay it doesn't not mean that's its defective. In order to disarm the self testing you pull out the Batteries hold the test button and push the Batteries back into place, this process will eliminate the self testing. March 29, 2014
Rated 5 out of 5 by Cost effective and reliable I used this model to replace the same model that I had purchased at least 7 years ago. I could use the old base and did not need to drill any new holes. The replacement could not have made my job any easier. September 16, 2014
Rated 5 out of 5 by smoke and carbon monoxide alarm Had to replace old ones, after 10yrs. Same brand different style never had any trouble with them and I know they work because had carbon monoxide problem once. September 17, 2014
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