Skip to main content

CURRENTLY SOLD OUT

First Alert SC9120B Hardwired Smoke & Carbon Monoxide Detector with Battery Backup

5.08 product ratings
 |

About this product

Product Identifiers

BrandFirst Alert
MPNSC9120B
UPC0029054513069
ModelSC9120B
eBay Product ID (ePID)5034423305

Product Key Features

Power SourceBattery, Hardwired
Number of Batteries1
FeaturesBattery Backup
ColorWhite
TypeSmoke & Carbon Monoxide Detector

Additional Product Features

Battery IncludedYes

Ratings and reviews

Learn more
5.0
8 product ratings
  • 8 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • by lefar2033
    02 Sep, 2023

    Smoke Detector

    I had a bad smoke detector that even battery replacement wouldn't stop the beep sound. I ordered and replaced it with this dual hardwired detector and it works great. I even picked up an extra one just in case there is a problem with a different detector.

    Verified purchase: YesCondition: New

  • by circleupranch
    19 Feb, 2025

    just what I needed. Everything works jus...

    just what I needed. Everything works just fine.

    Verified purchase: YesCondition: Pre-owned

  • by jameseagleeyes
    03 Dec, 2024

    Very good product works fine no problems...

    Very good product works fine no problems

    Verified purchase: YesCondition: New

  • by don_sdo_bsosq2s
    20 Aug, 2023

    Plug n play

    Good price house hold name you can trust!

    Verified purchase: YesCondition: New

  • by tonyfris
    02 Sep, 2020

    Good buy

    I've only had them up for two weeks but they seem like everything advertised. Thanks.

    Verified purchase: YesCondition: New

  • by von6467
    01 Jan, 2025

    Smoke & CO Detector

    Exactly as described - works great!! Thank you!

    Verified purchase: YesCondition: New

  • by marjim_390
    15 Dec, 2024

    Plug and play is always nice when replac...

    Plug and play is always nice when replacing a safety system.

    Verified purchase: YesCondition: New

  • by rabul5050_cxegfxd6yh
    23 May, 2024

    Good replacement

    Good replacement

    Verified purchase: YesCondition: New

More items related to this product

NEW FIRST ALERT Hardwired 120-Volt AC Smoke Alarm with Battery Backup SA9120BPCN
item 1 NEW FIRST ALERT Hardwired 120-Volt AC Smoke Alarm with Battery Backup SA9120BPCN
AU $25.28
First Alert 10-Year Battery Hardwired Smoke & Carbon Monoxide Detector
item 2 First Alert 10-Year Battery Hardwired Smoke & Carbon Monoxide Detector
AU $95.18
+AU $36.50 postage
Kidde Smart Hardwired Smoke and Carbon Monoxide Detector with Voice Alarm New.
item 3 Kidde Smart Hardwired Smoke and Carbon Monoxide Detector with Voice Alarm New.
AU $47.41
+AU $105.39 postage
First Alert Hardwired Smoke Alarm and carbon Monoxide Detector - White (9120B)
item 4 First Alert Hardwired Smoke Alarm and carbon Monoxide Detector - White (9120B)
AU $67.30
+AU $66.57 postage
Kidde Firex 21033086 CUAC10YFEX-V Smoke & Carbon Monoxide Alarm, Hardwired With
item 5 Kidde Firex 21033086 CUAC10YFEX-V Smoke & Carbon Monoxide Alarm, Hardwired With
AU $131.89
+AU $30.00 postage
First Alert 9120B Smoke Detector & Alarm, AC Powered With Battery Backup
item 6 First Alert 9120B Smoke Detector & Alarm, AC Powered With Battery Backup
AU $30.50
+AU $112.53 postage
BRK First Alert 9120B/1046836/SMI-100-AC Smoke Detector AC Powered w/battery NEW
item 7 BRK First Alert 9120B/1046836/SMI-100-AC Smoke Detector AC Powered w/battery NEW
AU $34.42
+AU $335.32 postage
Carbon Monoxide and Smoke 2in1 Combination Detector Alarms with Built-in Battery
item 8 Carbon Monoxide and Smoke 2in1 Combination Detector Alarms with Built-in Battery
AU $66.09
+AU $16.79 postage

Best Selling in Smoke & Gas Detectors

You may also like