Hardwire Combination Smoke/Carbon Monoxide Alarm

This hardwired combination smoke and carbon monoxide alarm wires directly into your homes electrical system and the battery backup ensures your safety even during power outages. This combonation alarm detects two hazards with one simple unit. Comes with ionization technology and an electromechanical sensor. Meets new construction requirements.

This smoke & CO alarm is for you if:
● You want alarms wired directly into your home's electrical system with the added safety of a battery backup.
● You want to easily mute unwanted alarms with the press of a button.

Where To Place Safety Alarms: At least one near a home's sleeping area and on every level of the home.

First Alert Hardwired Smoke/Monoxide Alarm SC9120B

Hardwire Combination Smoke/Carbon Monoxide Alarm Features:

• 120V AC with 9V battery backup.
• Electrochemical sensor - the most accurate technology available.
• Simple to use silence/test button with low battery chirp warning.
• Tamper resistant locking pins.
• Universal mounting bracket.
• Latching alarm indication.
• 7-year limited warranty.

Review this product

average customer rating based on 14 reviews

Not good overall so far!! - 05/16/2012
Reviewer: Donald  Scott
The two alarms from this purchase at FirstAlertStore.com are still working. However I had twelve in a guest house. When 6 went badafter only two years First Alert replaced them right away.a 7th went bad since Of those six two were bad on arrival. I bought these two to replace the bad ones. I also bought another at a retail store as I have a fire inspection next week. If these do not last I will be moving away from First Alert. Thank you. Have a nice day!!

Smoke/CO alarm - 04/28/2012
Reviewer: Robert Galbreath
easy install xcellant product

Smoke/CO combo - 04/21/2012
Reviewer: Neil Anderson
Good quality unit. Used with the separate strobe light.

- 04/17/2012
Reviewer: Frank Jirmasek
The items purchased are of excellent quality.

Great product and service - 04/15/2012
Reviewer: Eileen Sauret
I am very impressed with the service provided by First Alert and with the product-Smoke and carbon monoxide alarm.

Easy to install and great units - 04/07/2012
Reviewer: terrence sprankle
I got the units and installed very easily,great stuff!

- 03/29/2012
Reviewer: Jessica Robinson
The items were shipped to me in a prompt manner. It was easy toinstall and worked perfectly.

product - 03/25/2012
Reviewer: Timothy McMahon
great for all households for the safety in todays type house and with the daners of CO

Smoke/Carbon - 03/20/2012
Reviewer: Temur Yunusov
I have set it up. Its working. Thanks

- 03/05/2012
Reviewer: Robert Berg
Battery sent in unit did not work, so put one in myself. Getting bat.out off clip wasnt easy, as it felt like clip would break if pushed to hard. One bat. was in, the unit didnt beep like it said it would. Beeped once, but pushing the test butten did send alarm off.

- 03/01/2012
Reviewer: Peter Storandt
These arrived promptly and have been installed by our electrician. I now feel safe running the self-cleaning oven cycle!

- 02/17/2012
Reviewer: Georgette Lawton
This is the only product we will use. Extremely reliable and the price is fair. Quick to deliver.

Smoke & CO - 01/31/2012
Reviewer: Joseph Tolbert
They were easy to install and wire, one of the few combination smoke/carbon monoxide detectors on the market, highly recommend them for anyone updating their current system.

Replacement Combo Detector - 12/21/2011
Reviewer: Leonard Carlson
My home has six6 detectors that are all tied together electrically - three are smoke only the others are combos. The carbon monoxide alarm started going off periodically. Had the Heating people come and check for carbon monoxide - there was none present. The next was to have it checked out electrically. The lead time was quite long for a technician to check out the system - so I ordered an exact replacement from First Alert to do a trial and error replacement. My second unit combo was defective and Ive had no problem alarms since. All of my original units were installed in 11/2007 when the house was built new.