--- product_id: 24187174 title: "First Alert Battery Smoke Alarm" brand: "first alert" price: "KSh6314" currency: KES in_stock: true reviews_count: 9 category: "First Alert" url: https://www.desertcart.co.ke/products/24187174-first-alert-battery-smoke-alarm store_origin: KE region: Kenya --- # Battery-powered for hassle-free installation Precision Detection tech reduces false alarms Front-access battery compartment for easy swaps First Alert Battery Smoke Alarm **Brand:** first alert **Price:** KSh6314 **Availability:** ✅ In Stock ## Summary > 🔥 Stay ahead of danger with precision and ease ⚡ ## Quick Answers - **What is this?** First Alert Battery Smoke Alarm by first alert - **How much does it cost?** KSh6314 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/24187174-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 Smart Alert:** Know exactly when to upgrade with a clear end-of-life warning—never get caught off guard. - • **Top-Ranked Safety Essential:** Trusted by thousands, #1 in Smoke Detectors & Fire Alarms—join the safety-savvy community. - • **Effortless Battery Management:** Front-access compartment and 9V alkaline battery make replacements quick—no ladder needed. - • **User-Friendly Testing & Silence:** Test or silence alarms instantly with a single button, ensuring peace of mind on your schedule. - • **Cutting-Edge Precision Detection:** Advanced sensing tech minimizes cooking false alarms, so you stay alert only when it matters. ## Overview The First Alert SMI100 Battery Smoke Alarm features advanced Precision Detection technology to reduce nuisance alarms, a battery-powered design for easy installation, and a front-access battery compartment for simple maintenance. It includes an end-of-life warning and a test/silence button, making it a top-rated, user-friendly safety device trusted by professionals and homeowners alike. ## 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: smoke alarm - This smoke alarm was just what I needed. It work's great in my RV, fit's perfect, very easy to install, the alarm was load so people can hear it. Price was good for this product Review: Best Bang for your buck - This smoke detectors were extremely easy to install. It took me 15 minutes to install both of them. They already came with batteries. I bought these to install in my children’s bedrooms. ## 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 | #69 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 | 4.5 out of 5 stars 5,930 Reviews | | Item Dimensions D x W x H | 5.4"D x 5.4"W x 1.9"H | | Item Highlight | SMI100 | | Item Type Name | Smoke Alarm | | Item Weight | 11.2 ounces | | Manufacturer | Resideo | | Mfr Part Number | SMI100 | | 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 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 Count ## Images ![First Alert Battery Smoke Alarm - Image 1](https://m.media-amazon.com/images/I/61GUtvUotTL.jpg) ![First Alert Battery Smoke Alarm - Image 2](https://m.media-amazon.com/images/I/81pp1qBrXjL.jpg) ![First Alert Battery Smoke Alarm - Image 3](https://m.media-amazon.com/images/I/81cJazbFcNL.jpg) ![First Alert Battery Smoke Alarm - Image 4](https://m.media-amazon.com/images/I/71Lu3Q9HVZL.jpg) ![First Alert Battery Smoke Alarm - Image 5](https://m.media-amazon.com/images/I/71D57xvrb1L.jpg) ## Available Options This product comes in different **Pattern, Size, Style** options. ## Questions & Answers **Q: I recently purchased three of these smoke alarms from Amazon. Can you tell me how high up on the wall the alarm should be installed as I do not want to install on ceiling. I specifically purchased these as they can be ceiling or wall mounted. Thanks.** A: The instructions that come with the unit duplicate what I have read from several Fire Department sources: you can place your unit on the ceiling, but AT LEAST 4 inches (10cm) from the wall. If you want to mount it on the wall, mount it MORE THAN 4 inches (10cm) BELOW the ceiling, but NO LOWER than12 inches (30cm) below the ceiling. It has to be high enough up the wall to "smell" the smoke, but that 4 x 4 inch (10cm x 10cm) area where the wall meets the ceiling can sometimes harbor a "dead zone" of still air where the smoke would NOT reach the detector quickly enough during a fire to warn you in time. Thus, do NOT mount your detectors too close to where the wall meets the ceiling. **Q: Is this detector a photoelectric or ionization type?** A: Please check with your local authority having jurisdiction. Also you can check with NFPA online. Ionization smoke alarms are generally more responsive to flaming fires. How they work: Ionization-type smoke alarms have a small amount of radioactive material between two electrically charged plates, which ionizes the air and causes current to flow between the plates. When smoke enters the chamber, it disrupts the flow of ions, thus reducing the flow of current and activating the alarm. Download this chart on ionization smoke alarms (PDF, 943 KB). Photoelectric smoke alarms are generally more responsive to fires that begin with a long period of smoldering (called “smoldering fires”). How they work: Photoelectric-type alarms aim a light source into a sensing chamber at an angle away from the sensor. Smoke enters the chamber, reflecting light onto the light sensor; triggering the alarm. Download this chart on photoelectric smoke alarms (PDF, 782 KB). **Q: Does the unit beep to tell you that the battery is running low?** A: The beep is effective. It always seems to start in the middle of the night. I twist the unit off the ceiling and do a battery swap and have it back on the ceiling in less than a minute, craw back into bed before really waking up. It's not a pain to replace the batteries, it's very easy. Simply slide the tray out and pop new ones in. The batteries fit snuggly in the compartment and there are tabs that allow you to push the batteries out by applying pressure with your thumbs from the back side. There is an optional screw hole to make the battery compartment tamper resistant. This prevents people from easily taking the batteries to power their remote controls or whatever. When fire marshals inspect fire related deaths it's not uncommon to find the smoke and fire detectors had no batteries installed. This simple, optional, screw might seem like "a pain" to some people, but it's an easy way to save your life. This is a great unit. I have 6 in my house and I highly recommend them to everyone. **Q: 5 or 10 year warranty? Picture & Description say 10, Features says 5.** A: Package says 10 year limited warranty. It's cheap, easy to install. This is my second one. Had first one for 8 years. ## Customer Reviews ### ⭐⭐⭐⭐⭐ smoke alarm *by C***K on September 7, 2026* This smoke alarm was just what I needed. It work's great in my RV, fit's perfect, very easy to install, the alarm was load so people can hear it. Price was good for this product ### ⭐⭐⭐⭐⭐ Best Bang for your buck *by A***R on September 9, 2026* This smoke detectors were extremely easy to install. It took me 15 minutes to install both of them. They already came with batteries. I bought these to install in my children’s bedrooms. ### ⭐⭐⭐⭐⭐ Good price for pair and easy to install. *by D***D on September 22, 2026* Price was good for a pair. It took a week to be delivered! Detectors were was to activate and install. Screws with drywall anchors are provided. Spoke detectors I have used in the past were tricky to twist into the base. This design was simple and very easy to twist into (and out). ## Frequently Bought Together - FIRST ALERT Dual Sensor Smoke and Fire Alarm, SA3210 , White - First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White - First Alert CO710 Carbon Monoxide Detector with 10-Year Battery and Digital Temperature Display , White --- ## 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.co.ke/products/24187174-first-alert-battery-smoke-alarm](https://www.desertcart.co.ke/products/24187174-first-alert-battery-smoke-alarm) --- *Product available on Desertcart Kenya* *Store origin: KE* *Last updated: 2026-10-15*