---
product_id: 618661468
title: "First Alert SMI100, Battery-Operated Smoke Alarm, 2-Pack"
price: "€ 52.24"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.ie/products/618661468-first-alert-smi100-battery-operated-smoke-alarm-2-pack
store_origin: IE
region: Ireland
---

# First Alert SMI100, Battery-Operated Smoke Alarm, 2-Pack

**Price:** € 52.24
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** First Alert SMI100, Battery-Operated Smoke Alarm, 2-Pack
- **How much does it cost?** € 52.24 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/618661468-first-alert-smi100-battery-operated-smoke-alarm-2-pack)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## 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: Good smoke alarm, it comes with the 9 volt battery and is very easy to install.
Review: Great value, high quality, function well - ask my toast how I know. They are loud enough to wake the dead, which is good because I am a heavy sleeper. They fit in the same frame as my old smoke detectors.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0CJLN45JZ |
| Batteries  | 1 9V batteries required. (included) |
| Best Sellers Rank | #51,416 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #58 in Smoke Alarms |
| Customer reviews | 4.5 4.5 out of 5 stars (2,878) |
| Item model number  | SMI100 |
| Label  | First Alert |
| Manufacturer  | First Alert |
| Product Dimensions  | 14.22 x 14.22 x 4.83 cm; 272.16 g |

## Product Details

- **Alarm:** Smoke
- **Brand:** First Alert
- **Color:** White
- **Item Weight:** 9.6 ounces
- **Manufacturer:** Resideo
- **Number of Items:** 2
- **Power Source:** Battery Powered
- **Sensor Type:** Ionization
- **Style:** Precision Detection
- **UPC:** 029054022400

## Images

![First Alert SMI100, Battery-Operated Smoke Alarm, 2-Pack - Image 1](https://m.media-amazon.com/images/I/61G4T1kDyUL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***E on 30 December 2025*

Good smoke alarm, it comes with the 9 volt battery and is very easy to install.

### ⭐⭐⭐⭐⭐ Review
*by D***V on 29 December 2025*

Great value, high quality, function well - ask my toast how I know. They are loud enough to wake the dead, which is good because I am a heavy sleeper. They fit in the same frame as my old smoke detectors.

### ⭐⭐⭐⭐⭐ Review
*by K***Y on 7 January 2026*

Wonderful! Easy to install and the detector easily attaches to the base. Spending a little more is well worth not having installation issues!!!

## 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.ie/products/618661468-first-alert-smi100-battery-operated-smoke-alarm-2-pack](https://www.desertcart.ie/products/618661468-first-alert-smi100-battery-operated-smoke-alarm-2-pack)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-04-23*