---
product_id: 609937867
title: "First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack"
brand: "first alert"
price: "KD 11.92"
currency: KWD
in_stock: true
reviews_count: 8
category: "First Alert"
url: https://www.desertcart.com.kw/products/609937867-first-alert-smi100-ac-hardwire-interconnect-smoke-alarm-with-battery
store_origin: KW
region: Kuwait
---

# Hardwired with battery backup Interconnects all alarms instantly Quick Connect Plug for easy install First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack

**Brand:** first alert
**Price:** KD 11.92
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay ahead of danger with smart, seamless protection ⚡

## Quick Answers

- **What is this?** First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack by first alert
- **How much does it cost?** KD 11.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/609937867-first-alert-smi100-ac-hardwire-interconnect-smoke-alarm-with-battery)

## 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

- • **Battery Backup Power:** Continuous protection even during outages—never powerless.
- • **Visual Alarm Indicator:** Instantly know which unit triggered the alert—smart clarity.
- • **Effortless Installation:** Quick Connect Plug means no rewiring headaches.
- • **Whole-Home Interconnect:** One alarm sounds, all alarms respond—safety synchronized.
- • **Precision Detection Tech:** Reduces false alarms, so your peace stays intact.

## Overview

The First Alert SMI100-AC is a hardwired smoke alarm featuring advanced Precision Detection technology to minimize nuisance alerts while providing early fire warnings. It interconnects with compatible alarms for whole-home safety, includes a battery backup for power outage protection, and offers easy installation with a Quick Connect Plug. Designed for reliable, professional-grade home fire safety.

## Description

The First Alert SMI100-AC Hardwire Interconnect Smoke Alarm with Battery Backup meets new industry standards utilizing First Alert's Precision Detection advance sensing technology. This hardwire smoke alarm is easy to install and replace existing alarms with no need to rewire. Plus interconnect compatible alarms to create a whole home alarm system to help provide an early warning.

Review: Best smoke detector! - Ordered this set to replace all my upstairs smoke detectors! They were pretty much newer versions of what I had, very simple install all function well as well! Great value and great quality from a trusted brand!
Review: Peace of Mind with a Reliable Smoke Alarm - I recently installed the First Alert SMI100-AC Hardwire Interconnect Smoke Alarm throughout my home, and I’m really impressed with its performance and ease of use. Installation was straightforward. The unit is designed to be hardwired, and it also includes a battery backup, which gives added peace of mind during power outages. It integrates well with other First Alert alarms, so if one goes off, they all do — exactly what I was looking for in an interconnected system. The alarm is loud and clear, which is essential for ensuring everyone in the home is alerted quickly in an emergency. The test and silence buttons work as expected, and the indicator lights are easy to understand (green for power, red for alarm/test). What I particularly appreciate is the build quality. It feels solid and well-made, not flimsy like some other brands I’ve tried in the past. If I had one minor critique, it would be that the instructions could be a bit more detailed for first-time installers. If you have older Wired Smoke Detectors you may need an electrician to connect the new connector if you are not comfortable do that work yourself Overall, this is a reliable and well-built smoke alarm that offers great protection for your home. I highly recommend it!

## 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.
- Through early warning interconnect, when one alarm sounds, all compatible alarms will sound
- Battery backup provides continuous protection during power outages
- Alarm indicator visually identifies the unit that initiated the alarm
- Quick Connect Plug included allows for easy installation with no need to rewire

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | First Alert |
| Color | White |
| Item Weight | 9.6 ounces |
| Power Source | Battery Powered |
| Product Dimensions | 5.6"D x 5.6"W x 1"H |
| Style | Precision Detection |

## Product Details

- **Alarm:** Smoke Alarm
- **Brand:** First Alert
- **Color:** White
- **Global Trade Identification Number:** 10029054022469
- **Item Weight:** 0.6 Pounds
- **Number of Items:** 1
- **Power Source:** Battery Powered
- **Product Dimensions:** 5.6"D x 5.6"W x 1"H
- **Sensor Type:** Ionization
- **Style:** Precision Detection

## Images

![First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack - Image 1](https://m.media-amazon.com/images/I/61zYUADll+L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best smoke detector!
*by P***T on January 8, 2026*

Ordered this set to replace all my upstairs smoke detectors! They were pretty much newer versions of what I had, very simple install all function well as well! Great value and great quality from a trusted brand!

### ⭐⭐⭐⭐⭐ Peace of Mind with a Reliable Smoke Alarm
*by R***C on May 16, 2025*

I recently installed the First Alert SMI100-AC Hardwire Interconnect Smoke Alarm throughout my home, and I’m really impressed with its performance and ease of use. Installation was straightforward. The unit is designed to be hardwired, and it also includes a battery backup, which gives added peace of mind during power outages. It integrates well with other First Alert alarms, so if one goes off, they all do — exactly what I was looking for in an interconnected system. The alarm is loud and clear, which is essential for ensuring everyone in the home is alerted quickly in an emergency. The test and silence buttons work as expected, and the indicator lights are easy to understand (green for power, red for alarm/test). What I particularly appreciate is the build quality. It feels solid and well-made, not flimsy like some other brands I’ve tried in the past. If I had one minor critique, it would be that the instructions could be a bit more detailed for first-time installers. If you have older Wired Smoke Detectors you may need an electrician to connect the new connector if you are not comfortable do that work yourself Overall, this is a reliable and well-built smoke alarm that offers great protection for your home. I highly recommend it!

### ⭐⭐⭐⭐⭐ Perfect replacement
*by J***O on January 3, 2026*

Perfect replacement for a smoke detector that wouldn’t stop chirping. Replacement mounting hardware was identical to original, wiring simple, good price.

## Frequently Bought Together

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-01-29*