--- product_id: 602345752 title: "First Alert Battery Smoke Alarm" brand: "first alert" price: "€ 66.40" currency: EUR in_stock: true category: "First Alert" url: https://www.desertcart.pt/products/602345752-first-alert-battery-smoke-alarm store_origin: PT region: Portugal --- # Battery-powered for uninterrupted protection Front-access battery compartment for hassle-free replacement Precision Detection tech reduces false alarms First Alert Battery Smoke Alarm **Brand:** first alert **Price:** € 66.40 **Availability:** ✅ In Stock ## Summary > 🚨 Stay safe, stay savvy — protection that’s always a step ahead! ## Quick Answers - **What is this?** First Alert Battery Smoke Alarm by first alert - **How much does it cost?** € 66.40 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/602345752-first-alert-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:** Never get caught off guard—know exactly when it’s time to replace your alarm. - • **Smart Precision Detection:** Advanced sensing tech minimizes nuisance alarms from cooking, so you only get alerts that matter. - • **User-Friendly Battery Access:** Front battery compartment lets you swap batteries quickly without uninstalling the unit. - • **Trusted Loud Alarm & Test Button:** Loud enough to wake the whole household, with a simple test/silence button for peace of mind. - • **Effortless Installation & Maintenance:** Battery-operated design means no wiring headaches and easy 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 reliable fire safety. Its front-access battery compartment and end-of-life warning ensure hassle-free maintenance, while the loud alarm and test button provide dependable, user-friendly protection. Rated #1 in Smoke Detectors & Fire Alarms, it’s the smart choice for modern homes seeking peace of mind. ## 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 | #44 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 (5,481) | | 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 ![First Alert Battery Smoke Alarm - Image 1](https://m.media-amazon.com/images/I/61G4T1kDyUL.jpg) ![First Alert Battery Smoke Alarm - Image 2](https://m.media-amazon.com/images/I/31dgi1OWqSL.jpg) ![First Alert Battery Smoke Alarm - Image 3](https://m.media-amazon.com/images/I/41GFl10K0XL.jpg) ![First Alert Battery Smoke Alarm - Image 4](https://m.media-amazon.com/images/I/41vWX3O2IPL.jpg) ![First Alert Battery Smoke Alarm - Image 5](https://m.media-amazon.com/images/I/41+TEqGeDsL.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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/602345752-first-alert-battery-smoke-alarm](https://www.desertcart.pt/products/602345752-first-alert-battery-smoke-alarm) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-08-27*