---
product_id: 93486289
title: "First Alert SC9120B Combination Carbon Monoxide & Smoke Alarm AC Power & Battery"
brand: "housenow"
price: "2670925₫"
currency: VND
in_stock: true
category: "Hi"
url: https://www.desertcart.vn/products/93486289-first-alert-sc9120b-combination-carbon-monoxide-and-smoke-alarm-ac
store_origin: VN
region: Vietnam
---

# First Alert SC9120B Combination Carbon Monoxide & Smoke Alarm AC Power & Battery

**Brand:** housenow
**Price:** 2670925₫
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** First Alert SC9120B Combination Carbon Monoxide & Smoke Alarm AC Power & Battery by housenow
- **How much does it cost?** 2670925₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/93486289-first-alert-sc9120b-combination-carbon-monoxide-and-smoke-alarm-ac)

## Best For

- housenow enthusiasts

## Why This Product

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

## Description

The BRK hardwire combination smoke and carbon monoxide alarm detects two hazards with one simple unit. Carbon monoxide (CO) is a colorless, odorless, deadly gas. It can be emitted by sources including gas or oil furnaces, gas clothes dryers, water heaters, fireplaces, wood stoves, charcoal grills, gas ranges, and space heaters. A clogged chimney, improper venting, and attached garages can also cause carbon monoxide accumulation. According to the Consumer Product Safety Commission (CPSC), at least one CO alarm should be installed near a home&apos;s sleeping area. This smoke & CO alarm is for you if: &#x25CF; You want alarms wired directly into your home&apos;s electrical system with the added safety of a battery backup. &#x25CF; You want to easily mute unwanted alarms with the press of a button. Where To Place Safety Alarms: At least one near a home&apos;s sleeping area and on every level of the home. Features 120V AC with 9V battery backup Side load battery drawer Tamper resistant locking pins Universal mounting bracket Test/silence buttonLatching alarm indication

## Features

- Quick plug-in power connector for easy installation. 120-volt AC inter-connectable (with maximum 18 compatible devices). The alarm can be interconnected with up to 12 other compatible smoke alarms and six compatible devices like bells, horns, repeaters and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Power indicators show which unit in the series initiated the alarm
- Ionization sensor which is more effective at detecting flaming fires which consume combustible materials rapidly and spread quickly. Microprocessor controlled for fewer nuisance alarms
- Single test/silence button which both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. Automatically performs internal test of functionality
- Latching alarm indicator which automatically identifies which unit initiated the alarm. Separate smoke and carbon monoxide visual and audible warnings. Battery drawer lock and mounting bracket lock for tamper resistance. AC power indicator and alarm indicator light
- Low battery warning "chirp" and missing battery tab. 9-volt battery backup for peace of mind during power outages. All BRK Electronics carbon monoxide alarms are listed to UL Safety Standard 2034 for residential carbon monoxide alarms. Includes 9-volt backup battery. 5-year limited warranty
- ›See more product details

## Images

![First Alert SC9120B Combination Carbon Monoxide & Smoke Alarm AC Power & Battery - Image 1](https://images-na.ssl-images-amazon.com/images/I/416krdyhc%2BL.jpg)
![First Alert SC9120B Combination Carbon Monoxide & Smoke Alarm AC Power & Battery - Image 2](https://images-na.ssl-images-amazon.com/images/I/41EGRzlAMYL.jpg)
![First Alert SC9120B Combination Carbon Monoxide & Smoke Alarm AC Power & Battery - Image 3](https://images-na.ssl-images-amazon.com/images/I/41YbFugyLaL.jpg)

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**Shop now:** [https://www.desertcart.vn/products/93486289-first-alert-sc9120b-combination-carbon-monoxide-and-smoke-alarm-ac](https://www.desertcart.vn/products/93486289-first-alert-sc9120b-combination-carbon-monoxide-and-smoke-alarm-ac)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-09*