First Alert 120-Volt AC Smoke Alarm with Lithium Battery Backup-9120LB - The Home Depot
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Discontinued

First Alert

Model # 9120LB

Internet # 204357244

120-Volt AC Smoke Alarm with Lithium Battery Backup

First Alert 120-Volt AC Smoke Alarm with Lithium Battery Backup
 

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

$18.88 / each
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PRODUCT OVERVIEW

Model # 9120LB

Internet # 204357244

This alarm is 120-Volt AC inter-connectable (with maximum 18 compatible devices), which lets the alarm be interconnected with up to 12 other compatible smoke alarms and six compatible devices like bells, horns, repeaters, and door closers to network a comprehensive system for your home. If one unit triggers an alarm, all smoke alarms in the series will sound. The alarm comes with a lithium battery backup to make sure the alarm is working at all times. The dust-reducing packaging helps avoid accidental alarms due to contaminants and the 85 dB horn can be inspected with a test button.

  • Locking pins deter removal
  • Power indicator lets you see at a glance that the alarm is powered
  • Meets UL standards
  • 10-year limited warranty

Info & Guides

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SPECIFICATIONS

Dimensions
Product Depth (in.) 
Product Height (in.) 
5.59 
Product Width (in.) 
2.25 
Details
Alarm Sensor Type 
Ionization 
Alarm Type 
Smoke 
Alarm/Detector Features 
No Additional Features 
Battery Back-Up 
Yes 
Battery Power Type 
Lithium Ion 
Battery Size 
Lithium Ion 
Commercial / Residential 
Commercial / Residential 
Connector/Contact Type 
4-Wire 
Electrical Product Type 
Smoke Detector 
Included 
Batteries 
Power Source 
Battery 
Returnable 
90-Day 
Voltage (volts) 
120 
Warranty / Certifications
Certifications and Listings 
No Certifications or Listings 

CUSTOMER REVIEWS

Rated 4.2 out of 5 by 6 reviewers.
Rated 1.0 out of 5.0 by Bad from the start Bought these to replace the ones that went bad (alarms started going off 3am for NO reason) . After changing base to fit these (new ones) - I plugged it in and it started CHIRPING within 2 minutes ! ! And it never stopped ! I will definitely RETURN the both of them . I think I'll go with battery powered only and a different brand this time - but I've seen a lot of bad reviews from the Kidde brand as well , so I 'll probably stay away from those as well . January 26, 2015
Rated 5.0 out of 5.0 by Upgrade from D Battery Backup My 9120B smoke detectors turned 10 this year, so I decided to replace all 5 of them with new lithium battery backup models. The wiring and the plastic mounting rings for both models are the same, so I was able to simply (turn off power) twist off the old units, pop off the wires and plug them into the new unit, and then twist on the new units. Everything tested fine, and now I won't have to deal with low battery chirps every 6 months. January 20, 2015
Rated 5.0 out of 5.0 by There are not many wired smike detectors out there with Lithium batteries Exactly what I wanted at a good price. I had been looking all over for wired smike detectors with litho=ium battery back ups. These were exactle what I needed, easy to install and no replacing batteries every year. January 14, 2014
Rated 4.0 out of 5.0 by Was looking for 110V and lithium backup Exactly what I was looking for. Replaced 22 year old smoke alarms in a few minutes. November 1, 2013
Rated 5.0 out of 5.0 by SMOKE ALARM / FIRST ALERT EASY TO INSTALL & WORKS REALLY GOOD. FOR A REPLACEMENT UNIT FOR ANY BRAND YOU HAVE OVER 10 YEARS ITS EASY TO DO. GREAT BRAND & GREAT PRICE. 10 YEAR BATTERY IS ALSO GREAT IN THIS UNIT. May 23, 2014
Rated 5.0 out of 5.0 by Up to date protection, easy to install This was a replacement for a 10 year old unit, it was a piece of cake to put in. The bezel that mounts to the ceiling was just slightly larger than the original so it covered the slight indent left by the original. Honestly I think this took about 10 minutes to have fully operational, that included opening the package and glancing at the instructions. March 12, 2014
  • 2015-05-03T11:08:09.511-05:00
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SHIPPING AND DELIVERY OPTIONS

Standard Shipping includes delivery by small parcel service. Processing time varies by product.


If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.