---
product_id: 604424417
title: "Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack"
brand: "first alert"
price: "26051CFA"
currency: XOF
in_stock: true
reviews_count: 8
category: "First Alert"
url: https://www.desertcart.sn/products/604424417-smoke-alarm-battery-operated-detector-with-test-and-silence-button
store_origin: SN
region: Senegal
---

# Battery-operated, no wiring hassle Precision Detection tech reduces false alarms Front-access battery compartment Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack

**Brand:** first alert
**Price:** 26051CFA
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay safe, stay smart—because your peace of mind deserves precision.

## Quick Answers

- **What is this?** Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack by first alert
- **How much does it cost?** 26051CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/604424417-smoke-alarm-battery-operated-detector-with-test-and-silence-button)

## 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 Warning:** Stay ahead of safety with timely alerts when it’s time to replace your alarm—never compromise on protection.
- • **Smart Battery Access:** Front-facing battery compartment lets you swap batteries without uninstalling—because convenience is key.
- • **Test & Silence Button:** Quickly verify your alarm’s readiness or silence false alerts with a simple press—control at your fingertips.
- • **Effortless Installation:** Battery-powered design means no wiring—mount in minutes and join thousands securing their homes hassle-free.
- • **Precision Detection Technology:** Advanced sensing reduces nuisance alarms from cooking smoke, so you only get alerts that matter.

## Overview

The First Alert SMI100 is a battery-operated smoke alarm featuring advanced Precision Detection technology that minimizes false alarms while providing early fire warnings. Its user-friendly design includes a front-access battery compartment, a test/silence button for easy maintenance, and an end-of-life alert to ensure continuous home safety. Ideal for quick installation and reliable protection, it’s a top-rated choice for modern households.

## 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.

Review: Reliable Smoke Alarm That Was Quick and Easy to Install - I recently purchased the First Alert SMI100 smoke alarms and I’m really happy with them. Installation was incredibly easy since they are battery operated, so there was no wiring needed. I had both alarms mounted in just a few minutes. The design is simple and clean, and the front battery compartment makes it easy to change the battery without taking the whole unit down. I also like the test/silence button on the front because it makes testing the alarm quick and simple. The alarm itself is loud enough that you would definitely hear it throughout the house, which is exactly what you want for safety. The detectors use updated sensing technology designed to give early warning of fires while reducing nuisance alarms from things like cooking smoke.Overall, these smoke alarms give me peace of mind knowing my home has reliable protection. They were affordable, easy to install, and work exactly as expected. I would definitely recommend them to anyone looking for a simple and dependable smoke alarm.
Review: Good product - Works great and is easy to put on the wall.

## 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 | B0CJMP7WHH |
| Alarm | Smoke Alarm |
| Best Sellers Rank | #30 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 out of 5 stars 4,253 Reviews |
| Item Dimensions D x W x H | 5.4"D x 5.4"W x 1.9"H |
| Item Type Name | Smoke Alarm |
| Manufacturer | Resideo |
| Model Number | SMI100 |
| Number of Items | 1 |
| Operating Humidity | 10-95% RH |
| Power Source | Battery Powered |
| Product Dimensions | 5.4"D x 5.4"W x 1.9"H |
| Product Style | Precision Detection |
| Sensor Type | Ionization |
| Style | Precision Detection |
| UPC | 029054022387 |
| Unit Count | 1.0 Count |

## Product Details

- **Alarm:** Smoke Alarm
- **Brand:** First Alert
- **Color:** White
- **Item Weight:** 11.2 ounces
- **Operating Humidity:** 10-95% RH
- **Power Source:** Battery Powered
- **Product Dimensions:** 5.4"D x 5.4"W x 1.9"H
- **Sensor Type:** Ionization
- **Style:** Precision Detection
- **Unit Count:** 1.0 Count

## Images

![Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack - Image 1](https://m.media-amazon.com/images/I/61GUtvUotTL.jpg)
![Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack - Image 2](https://m.media-amazon.com/images/I/81pp1qBrXjL.jpg)
![Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack - Image 3](https://m.media-amazon.com/images/I/81cJazbFcNL.jpg)
![Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack - Image 4](https://m.media-amazon.com/images/I/71Lu3Q9HVZL.jpg)
![Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack - Image 5](https://m.media-amazon.com/images/I/71D57xvrb1L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable Smoke Alarm That Was Quick and Easy to Install
*by J***N on March 4, 2026*

I recently purchased the First Alert SMI100 smoke alarms and I’m really happy with them. Installation was incredibly easy since they are battery operated, so there was no wiring needed. I had both alarms mounted in just a few minutes. The design is simple and clean, and the front battery compartment makes it easy to change the battery without taking the whole unit down. I also like the test/silence button on the front because it makes testing the alarm quick and simple. The alarm itself is loud enough that you would definitely hear it throughout the house, which is exactly what you want for safety. The detectors use updated sensing technology designed to give early warning of fires while reducing nuisance alarms from things like cooking smoke.Overall, these smoke alarms give me peace of mind knowing my home has reliable protection. They were affordable, easy to install, and work exactly as expected. I would definitely recommend them to anyone looking for a simple and dependable smoke alarm.

### ⭐⭐⭐⭐⭐ Good product
*by B***L on May 15, 2026*

Works great and is easy to put on the wall.

### ⭐⭐⭐⭐⭐ Reliable and loud
*by E***T on April 9, 2026*

So far so good, we've had these fire alarms for about a year now and the one near the kitchen we replaced the batteries about 6 months ago, and the other one we just did for the first time. The one near the kitchen has been triggered a few times due to various baking mishaps so that makes sense I guess, definitely loud enough to wake you if necessary. Its a bit of a pain to change the batteries but that's life. Seems to be reliable and that's all I really care about. Install was simple enough.

## Frequently Bought Together

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-05-23*