---
product_id: 602345752
title: "Battery Smoke Alarm"
brand: "first alert"
price: "HK$486"
currency: HKD
in_stock: true
category: "First Alert"
url: https://www.desertcart.hk/products/602345752-battery-smoke-alarm
store_origin: HK
region: Hong Kong
---

# Battery-powered for uninterrupted protection Front-access battery compartment for easy swaps Precision Detection tech reduces false alarms Battery Smoke Alarm

**Brand:** first alert
**Price:** HK$486
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay ahead of danger with precision and ease! ⚡

## Quick Answers

- **What is this?** Battery Smoke Alarm by first alert
- **How much does it cost?** HK$486 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/602345752-battery-smoke-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

- • **End-of-Life Alert:** Know exactly when it’s time to upgrade with a clear end-of-life warning—never get caught off guard.
- • **Reliable Peace of Mind:** Loud alarm and easy test/silence button keep your home safe and your mind at ease.
- • **Smart Precision Detection:** Advanced sensing technology minimizes annoying cooking false alarms while ensuring early fire alerts.
- • **User-Friendly Battery Access:** Front-facing battery compartment lets you replace batteries without uninstalling the unit.
- • **Effortless Installation & Maintenance:** Battery-operated design means no wiring hassle and quick setup in minutes.

## Overview

The First Alert Battery Smoke Alarm (SMI100) combines cutting-edge Precision Detection technology with a battery-powered design for easy installation and maintenance. It reduces false alarms from cooking, features a front-access battery compartment, and includes an end-of-life warning to ensure continuous, reliable fire protection. Trusted by thousands, it’s a top-rated, hassle-free safety upgrade for any modern home.

## Description

The First Alert SMI100 Battery-Operated Smoke Alarm is equipped with First Alert's Precision Detection advanced sensing technology and meets new industry standards. This battery-operated smoke alarm is easy to install and the front access battery compartment makes for easy battery replacements.

## Features

- First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
- Battery-operated alarm allows for easy installation and maintenance
- Front access battery compartment makes for easy battery replacements
- End-of-life warning lets you know when it’s time to replace the alarm
- Test/silence button for efficient testing to ensure alarm is working properly

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJLN45JZ |
| Alarm | Smoke |
| Best Sellers Rank | #42 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Smoke Detectors & Fire Alarms |
| Brand | First Alert |
| Built-In Media | 9V Alkaline Battery |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (5,233) |
| Item Dimensions D x W x H | 5.6"D x 5.6"W x 1.9"H |
| Item Type Name | Smoke Alarm |
| Item Weight | 9.6 ounces |
| Manufacturer | Resideo |
| Mfr Part Number | SMI100 |
| Model Number | SMI100 |
| Number of Items | 2 |
| Power Source | Battery Powered |
| Product Style | Precision Detection |
| Sensor Type | Ionization |
| UPC | 029054022400 |
| Unit Count | 2 Count |

## Product Details

- **Alarm:** Smoke
- **Brand:** First Alert
- **Color:** White
- **Item Weight:** 9.6 ounces
- **Number of Items:** 2
- **Power Source:** Battery Powered
- **Product Dimensions:** 5.6"D x 5.6"W x 1.9"H
- **Sensor Type:** Ionization
- **Style:** Precision Detection
- **Unit Count:** 2 Count

## Images

![Battery Smoke Alarm - Image 1](https://m.media-amazon.com/images/I/61G4T1kDyUL.jpg)
![Battery Smoke Alarm - Image 2](https://m.media-amazon.com/images/I/81pp1qBrXjL.jpg)
![Battery Smoke Alarm - Image 3](https://m.media-amazon.com/images/I/81cJazbFcNL.jpg)
![Battery Smoke Alarm - Image 4](https://m.media-amazon.com/images/I/71Lu3Q9HVZL.jpg)
![Battery Smoke Alarm - Image 5](https://m.media-amazon.com/images/I/71D57xvrb1L.jpg)

## Available Options

This product comes in different **Pattern, Size, Style** options.

## Frequently Bought Together

- First Alert SMI100, Battery-Operated Smoke Alarm, 2-Pack
- Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
- Amazon Basics 8-Pack 9V Alkaline Batteries, 5-Year Shelf Life - for Smoke/CO Detector, Electronics & Audio

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**Shop now:** [https://www.desertcart.hk/products/602345752-battery-smoke-alarm](https://www.desertcart.hk/products/602345752-battery-smoke-alarm)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-08-12*