---
product_id: 427951783
title: "Sc9120Bff Brk Sc-9120B Hardwired Smoke And Carbon Monoxide Alarm With Battery Backup"
brand: "first alert"
price: "₨70874"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/427951783-sc9120bff-brk-sc-9120b-hardwired-smoke-and-carbon-monoxide-alarm
store_origin: LK
region: Sri Lanka
---

# Battery backup included Hardwired for reliability Dual smoke & CO detection Sc9120Bff Brk Sc-9120B Hardwired Smoke And Carbon Monoxide Alarm With Battery Backup

**Brand:** first alert
**Price:** ₨70874
**Availability:** ✅ In Stock

## Summary

> Safety Meets Innovation! 🚀

## Quick Answers

- **What is this?** Sc9120Bff Brk Sc-9120B Hardwired Smoke And Carbon Monoxide Alarm With Battery Backup by first alert
- **How much does it cost?** ₨70874 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/427951783-sc9120bff-brk-sc-9120b-hardwired-smoke-and-carbon-monoxide-alarm)

## Best For

- first alert enthusiasts

## Why This Product

- Trusted first alert brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Indicators:** LED lights clearly indicate smoke or CO alarm status.
- • **Connect & Protect:** Easily connects with other compatible alarms for enhanced safety.
- • **Convenient Design:** Side-load battery compartment for quick battery changes.
- • **Stay Alert, Stay Safe!:** Hardwired design ensures constant monitoring.
- • **User-Friendly Operation:** Single test/silence button for effortless management.

## Overview

The First Alert SC9120BFF BRK SC-9120B is a hardwired smoke and carbon monoxide alarm that features a reliable battery backup, ensuring constant monitoring. With the ability to connect to other compatible detectors, smart LED indicators, and a user-friendly design, this compact alarm is essential for any modern home.

## Description

Sc9120Bff Brk Sc-9120B Hardwired Smoke And Carbon Monoxide Alarm With Battery Backup

## Features

- Hardwired CO smoke alarm features battery backup for constant monitoring
- Can connect to other compatible BRK or First Alert CO smoke detectors
- Lights indicate if the alarm is for smoke or for carbon monoxide
- Single test/silence button for simple operation
- Side-load battery compartment for convenience

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | First Alert |
| Style | Compact |
| Power Source | Battery Powered,Hardwired,Gas Powered |
| Item Weight | 227 g |
| Alarm | Audible |
| Sensor Type | Carbon Monoxide Sensor |
| Global Trade Identification Number | 00029054015341 |
| Number of Items | 1 |
| Manufacturer | First Alert |
| UPC | 029054015341 |
| Country of Origin | USA |
| Item model number | SC9120B |
| Product Dimensions | 4.83 x 14.22 x 14.22 cm; 226.8 g |
| ASIN | B00O8MVW12 |

## Product Details

- **Brand:** First Alert
- **Style:** Compact
- **Power Source:** Battery Powered,Hardwired,Gas Powered
- **Item Weight:** 227 g
- **Alarm:** Audible
- **Sensor Type:** Carbon Monoxide Sensor
- **Global Trade Identification Number:** 00029054015341
- **Number of Items:** 1
- **Manufacturer:** First Alert
- **UPC:** 029054015341

## Images

![Sc9120Bff Brk Sc-9120B Hardwired Smoke And Carbon Monoxide Alarm With Battery Backup - Image 1](https://m.media-amazon.com/images/I/61vLvq86+rL.jpg)

## Questions & Answers

**Q: Why does this model contain the radioactive part? I am sure you are going to tell me that it is a trace amount and that it has all approvals...**
A: The "radioactive part" is how it works.  Don't like it?  Don't buy it.  Simple.

As for false alarms, this unit with its "radioactive part" is actually much more likely to give false alarms that condition people to ignore them.  It is also much less sensitive to the smoldering, smoke-producing fires that are more common in homes.  That's why ionization detectors are no longer recommended in residential settings.  Experts now recommend only photoelectric devices in homes, so if you have these, you should replace all of them with the SC7010B.

**Q: Because its a combo alarm where is the best place to install it since smoke rises and carbon monoxide doesn't?**
A: According to the National Fire Protection Association: Choose smoke alarms that have the label of a recognized testing laboratory.Install smoke alarms inside each bedroom, outside each sleeping area and on every level of the home, including the basement.On levels without bedrooms, install alarms in the living room (or den or family room) or near the stairway to the upper level, or in both locations.Smoke alarms installed in the basement should be installed on the ceiling at the bottom of the stairs leading to the next level.Smoke alarms should be installed at least 10 feet (3 meters) from a cooking appliance to minimize false alarms when cooking.Mount smoke alarms high on walls or ceilings (remember, smoke rises). Wall-mounted alarms should be installed not more than 12 inches away from the ceiling (to the top of the alarm). If you have ceilings that are pitched, install the alarm within 3 feet of the peak but not within the apex of the peak (four inches down from the peak).

**Q: If the alarm goes off, how can you tell whether it's due to CO or fire if there is no voice alert?**
A: I'm sure we'll all remember the number of beeps for each type of emergency, in an actual emergency, when we've been woken up in the middle of the night.
I'll pay the extra $10 per detector and get the voice alert.  I humbly suggest you do the same.

**Q: What is the manufacture date on these items?**
A: Your warranty starts at the date of purchase.  Keep your receipt.  Your 5 year shelf life starts the day you power it up.  The expiration date is hard coded into the software and only starts the day you plug it in..... This is from BRK WEBSITE

## Frequently Bought Together

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-01-26*