--- product_id: 609937867 title: "First Alert Hardwire Smoke Alarm" brand: "first alert" price: "₨676" currency: SCR in_stock: true category: "First Alert" url: https://www.desertcart.sc/products/609937867-first-alert-hardwire-smoke-alarm store_origin: SC region: Seychelles --- # Hardwired with battery backup Interconnects all compatible alarms Quick Connect Plug for easy install First Alert Hardwire Smoke Alarm **Brand:** first alert **Price:** ₨676 **Availability:** ✅ In Stock ## Summary > 🔥 Stay ahead of danger with smart, seamless protection ⚡ ## Quick Answers - **What is this?** First Alert Hardwire Smoke Alarm by first alert - **How much does it cost?** ₨676 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/609937867-first-alert-hardwire-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 - • **Visual Alarm Indicator:** Easily identify which unit triggered the alert for faster response. - • **Effortless Installation:** Quick Connect Plug means no rewiring headaches—upgrade in minutes. - • **Precision Detection Tech:** Reduces false alarms from cooking, so you only get alerts that matter. - • **Uninterrupted Protection:** Battery backup keeps you safe even during power outages. - • **Whole-Home Early Warning:** Interconnect compatible alarms sound together for maximum safety. ## Overview The First Alert Hardwire Smoke Alarm (SMI100-AC) features advanced Precision Detection technology to minimize nuisance alarms while providing early fire warnings. It interconnects with compatible alarms for whole-home safety, includes a battery backup for power outages, and installs easily with a Quick Connect Plug—making it a reliable, hassle-free upgrade for modern homes. ## 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. ## 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 | |---------------|-------| | ASIN | B0CJMN3443 | | Alarm | Smoke Alarm | | Best Sellers Rank | #222 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Smoke Detectors & Fire Alarms | | Brand | First Alert | | Built-In Media | Easy Adapter Plug, 9V Alkaline Battery | | Color | White | | Customer Reviews | 4.5 4.5 out of 5 stars (2,591) | | Global Trade Identification Number | 10029054022469 | | Item Dimensions D x W x H | 5.6"D x 5.6"W x 1"H | | Item Highlight | SMI100-AC, 9V Battery Backup | | Item Type Name | Smoke Alarm | | Item Weight | 9.6 ounces | | Manufacturer | Resideo | | Mfr Part Number | SMI100-AC | | Model Number | SMI100-AC | | Number of Items | 1 | | Power Source | Corded Electric | | Product Style | Precision Detection | | Sensor Type | Ionization | | UPC | 029054022462 | | Unit Count | 1 Count | ## Product Details - **Alarm:** Smoke Alarm - **Brand:** First Alert - **Color:** White - **Global Trade Identification Number:** 10029054022469 - **Item Weight:** 9.6 ounces - **Power Source:** Corded Electric - **Product Dimensions:** 5.6"D x 5.6"W x 1"H - **Sensor Type:** Ionization - **Style:** Precision Detection - **Unit Count:** 1 Count ## Images ![First Alert Hardwire Smoke Alarm - Image 1](https://m.media-amazon.com/images/I/61zYUADll+L.jpg) ![First Alert Hardwire Smoke Alarm - Image 2](https://m.media-amazon.com/images/I/310y0t3dEgL.jpg) ![First Alert Hardwire Smoke Alarm - Image 3](https://m.media-amazon.com/images/I/41fDyhmo96L.jpg) ![First Alert Hardwire Smoke Alarm - Image 4](https://m.media-amazon.com/images/I/41GfvxyHKmL.jpg) ![First Alert Hardwire Smoke Alarm - Image 5](https://m.media-amazon.com/images/I/41QgQi4JFBL.jpg) ## Available Options This product comes in different **Pattern, Size, Style** options. ## Frequently Bought Together - First Alert SMI100-AC, 9120B Replacement Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack - First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup, 1-Pack - First Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 6-Pack --- ## 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.sc/products/609937867-first-alert-hardwire-smoke-alarm](https://www.desertcart.sc/products/609937867-first-alert-hardwire-smoke-alarm) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-09-03*