--- product_id: 255571302 title: "First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm, 1-Pack" brand: "first alert" price: "R2000" currency: ZAR in_stock: true reviews_count: 6 category: "First Alert" url: https://www.desertcart.co.za/products/255571302-first-alert-smco100-battery-operated-combination-smoke-and-carbon-monoxide store_origin: ZA region: South Africa --- # Battery-powered, easy install Precision Detection tech 2-in-1 Smoke & CO protection First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm, 1-Pack **Brand:** first alert **Price:** R2000 **Availability:** ✅ In Stock ## Summary > 🛡️ Stay ahead of danger with smart, silent protection. ## Quick Answers - **What is this?** First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm, 1-Pack by first alert - **How much does it cost?** R2000 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/255571302-first-alert-smco100-battery-operated-combination-smoke-and-carbon-monoxide) ## 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:** Know exactly when it’s time to replace your alarm, ensuring continuous protection without guesswork. - • **Dual Threat Defense:** Reliable 2-in-1 smoke and carbon monoxide detection keeps your home safer with one sleek device. - • **Smart Test & Silence Button:** Quickly test functionality or silence nuisance alarms with a single press, saving time and stress. - • **Hassle-Free Battery Operation:** Battery-powered design means no wiring—install anywhere, maintain effortlessly. - • **Cutting-Edge Precision Detection:** Advanced sensors reduce false alarms from cooking, so you stay alert only when it matters. ## Overview The First Alert SMCO100 is a battery-operated combination smoke and carbon monoxide alarm featuring advanced Precision Detection technology to minimize false alarms. It offers reliable dual protection, easy installation without wiring, a convenient test/silence button, and an end-of-life warning to keep your home continuously safe. ## Description The First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm is equipped with First Alert's Precision Detection advanced sensing technology and meets new industry standards. This 2-in-1 smoke and carbon monoxide alarm provides reliable protection against both threats and is easy to install and maintain. Review: ممتاز - منتج رائع وجودة عاليه جدا Review: Rookmelder - Was dik in orde. ## 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 - Provides reliable 2-in-1 protection against both smoke and carbon monoxide - Battery-operated alarm allows for easy installation and maintenance - Test/silence button for efficient testing to ensure alarm is working properly - End-of-life warning lets you know when it’s time to replace the alarm ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CKTZ4GVW | | Alarm | Smoke, CO | | Best Sellers Rank | #44,234 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #49 in Smoke Alarms | | Brand | First Alert | | Built-In Media | AA Batteries | | Color | White | | Colour | White | | Customer Reviews | 4.6 out of 5 stars 659 Reviews | | Global Trade Identification Number | 00029054022066 | | Item Dimensions D x W x H | 14.2D x 14.2W x 4.8H centimeters | | Item Type Name | Combination Alarm | | Item Weight | 0.52 Pounds | | Item weight | 0.52 Pounds | | Manufacturer | Resideo | | Mfr Part Number | 1046776 | | Model Number | SMCO100 | | Number of Items | 1 | | Power Source | Battery Powered | | Power source | Battery Powered | | Product Style | Standard Profile with Audible Alert | | Product dimensions | 14.2D x 14.2W x 4.8H centimeters | | Sensor Type | Photoelectric | | Style | Standard Profile with Audible Alert | | UPC | 029054022066 | | Unit Count | 1 Count | ## Product Details - **Brand:** First Alert - **Colour:** White - **Power source:** Battery Powered - **Product dimensions:** 14.2D x 14.2W x 4.8H centimeters - **Style:** Standard Profile with Audible Alert ## Images ![First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm, 1-Pack - Image 1](https://m.media-amazon.com/images/I/71uMGEHkcjL.jpg) ![First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm, 1-Pack - Image 2](https://m.media-amazon.com/images/I/71Eg3o1EJ8L.jpg) ![First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm, 1-Pack - Image 3](https://m.media-amazon.com/images/I/71PTbp4YxuL.jpg) ![First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm, 1-Pack - Image 4](https://m.media-amazon.com/images/I/81-O15gEQ9L.jpg) ![First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm, 1-Pack - Image 5](https://m.media-amazon.com/images/I/61HCluyieQL.jpg) ## Available Options This product comes in different **Pattern, Size, Style** options. ## Questions & Answers **Q: How long do batteries last?** A: Using the batteries that came with mine, it went 275 days before the "batteries need changing" beeping started. **Q: Advice on false alarms? Goes off every week or so. It's in our kitchen/living room, but goes off even when we are not cooking. Goes 1 min then stops..** A: I have this model and it always goes off. Every time someone takes a shower, or even when cooking and no smoke. I also have a fog machine now for Halloween and it goes crazy. I'm currently researching a different model because this one drives me crazy. **Q: I have these througout my house and rental unit. Installed them about 7 years ago and many malfunctioning. Any durability mprovments since 7 yrs ago?** A: bought mine in Dec2017. It says 7 year warranty on this unit, so I'll see. Many CO detectors are only 5 yrs, but you can find higher quality ones (not avail on Amazon) that are good for 10 yrs and have dual sealed non-replaceable batteries (so install and forget for a decade). I bought this because it does both CO & smoke. I have a CO detector by our bedrooms that displays CO readings in real time above 11ppm, which is superior to this. Even low levels of CO is hazardous, and govt regs specify an alarm to sound only if >30ppm, not lower levels. **Q: Can the voice part not be used (says programmable)? alarm/beep only?** A: I really wish it were. No, it will always use the bellowing voice. You can program which area the device is in, such as hallway or bedroom so the alarm will identify where the trouble is. Read the reviews carefully and believe them when they say it goes of randomly in the early hours and runs its test mode at 3am. I literally threw mine down the street at 3am after it went off for no reason the 4th night in a row. ## Customer Reviews ### ⭐⭐⭐⭐⭐ ممتاز *by S***D on 13 November 2024* منتج رائع وجودة عاليه جدا ### ⭐⭐⭐⭐⭐ Rookmelder *by V***Y on 26 January 2026* Was dik in orde. ### ⭐⭐⭐⭐ Recensie *by E***N on 6 December 2025* Correct product. Snelle levering. ## Frequently Bought Together - saf First Alert smoke and co combo - FireAngel Combination Smoke and Carbon Monoxide Alarm for Home - SCB10-R, 10 Year Life, Dual Carbon Monoxide Detector and Smoke Alarm with Test and Hush Button - Combined CO and Fire Alarm - White - FireAngel Digital Carbon Monoxide Detector with 10-Year Sealed for Life Battery - FA3322 Humidity, Temperature and CO Alarm - Portable Carbon Monoxide Alarms for Home and Travel - CO Detector Monitor --- ## 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.za/products/255571302-first-alert-smco100-battery-operated-combination-smoke-and-carbon-monoxide](https://www.desertcart.co.za/products/255571302-first-alert-smco100-battery-operated-combination-smoke-and-carbon-monoxide) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-07-26*