--- product_id: 602000076 title: "Hardwire Combination Smoke & Carbon Monoxide Alarm" brand: "first alert" price: "VT22136" currency: VUV in_stock: true reviews_count: 8 category: "First Alert" url: https://www.desertcart.vu/products/602000076-hardwire-combination-smoke-and-carbon-monoxide-alarm store_origin: VU region: Vanuatu --- # Battery backup for power outages Interconnects alarms instantly Precision Detection tech Hardwire Combination Smoke & Carbon Monoxide Alarm **Brand:** first alert **Price:** VT22136 **Availability:** ✅ In Stock ## Summary > 🚨 Stay ahead of danger with smart, seamless safety. ## Quick Answers - **What is this?** Hardwire Combination Smoke & Carbon Monoxide Alarm by first alert - **How much does it cost?** VT22136 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/602000076-hardwire-combination-smoke-and-carbon-monoxide-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 - • **User-Friendly Testing:** Test/silence button ensures your alarm is always ready without the hassle. - • **Effortless Installation:** Quick Connect Plug means no rewiring headaches—get protected fast. - • **Reliable Battery Backup:** Continuous protection even during power outages—never miss a critical alert. - • **Seamless Interconnectivity:** When one alarm sounds, all compatible alarms alert you—total home coverage. - • **Precision Detection Technology:** Reduces false alarms, so your peace of mind stays uninterrupted. ## Overview The First Alert SMICO100-AC is a hardwired combination smoke and carbon monoxide alarm featuring advanced Precision Detection technology to minimize false alarms. It supports interconnectivity with compatible alarms for whole-home early warning, includes a Quick Connect Plug for easy installation, and has a battery backup to maintain protection during power outages. Designed for reliable, user-friendly operation, it meets new industry safety standards. ## Description The SMICO100-AC Interconnect Hardwire 2-in-1 Smoke & CO Alarm with Battery Backup utilizes First Alert's Precision Detection technology and meets new industry standards. Easily install and interconnect multiple alarms together to create an alarm system throughout your home. Review: Reliable & Reputable Detectors! - I have been a master electrician for 32+ years. If you're not 100% sure of what you're doing, hire a professional! Ok a lot of people are complaining about the new connector. It literally takes 60 seconds to rewire. I rewire anyways so I can put a meter on the ceiling wires to make sure everything is as it should be. The base is a tad smaller than my previous ones. They were from a different company though. It presented zero issues during the installation. I have 3 detectors upstairs and one in the basement. I wired them all and they all worked inline perfectly. When one goes off, they all go off. The alarm is very loud and high pitched. It also tests both the smoke and CO² detectors when pushing the test button. You'll get a beep and then another beep. Then it repeats. Meaning they are all working. Bonus each detector comes with a pre installed Duracell 9 volt battery. You also receive a dust cover for the detector if you need to work in that room. Kicking up dust or debris can get inside the unit and fault it. Nice little freebie to have. Although I didn't need, they come with very detailed instructions with diagrams. After I installed them all I tested it my way using certain techniques to get both detectors to alert. They passed on both smoke and CO². For this price point, I am very happy with these units. It gives me a sense of security knowing my family is protected. Please mark the back of your detectors with the date you install them. I use a black marker. Also be sure you were shipped the correct units. It should say on the outside label Combination Smoke/Carbon Monoxide Alarm. I've posted pictures along with a video. I hope this aids with your decision whether these are for your home or not. I will update again if I have any issues in the future. As of now they are working as they should and I again, am very happy with my purchase. Review: Good replacement - Easy installation. Works well as replacement for expired alarms. ## 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 - Quick Connect Plug allows for easy installation with no need to rewire - Battery backup provides continuous protection during power outages - Test/silence button for efficient testing to ensure alarm is working properly - The date shown on the product is the Manufacture Date, which identifies when the product was produced ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CLVRSC1Q | | Alarm | Smoke, CO | | Best Sellers Rank | #219 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Smoke & Carbon Monoxide Alarms | | Brand | First Alert | | Built-In Media | Easy Adapter Plug, 9V Battery | | Color | White | | Customer Reviews | 4.4 out of 5 stars 1,816 Reviews | | Item Dimensions D x W x H | 5.5"D x 2"W x 5.5"H | | Item Highlight | SMICO100-AC, 9V Battery Backup | | Item Type Name | Combination Alarm | | Item Weight | 8.96 ounces | | Manufacturer | Resideo | | Mfr Part Number | SMICO100-AC | | Model Number | SMICO100-AC | | Number of Items | 1 | | Operating Humidity | 10-95% RH | | Power Source | Corded Electric | | Product Dimensions | 5.5"D x 2"W x 5.5"H | | Product Style | Precision Detection | | Sensor Type | Ionization | | Style | Precision Detection | | UPC | 029054022752 | | Unit Count | 1 Count | ## Product Details - **Alarm:** Smoke, CO - **Brand:** First Alert - **Color:** White - **Item Weight:** 8.96 ounces - **Operating Humidity:** 10-95% RH - **Power Source:** Corded Electric - **Product Dimensions:** 5.5"D x 2"W x 5.5"H - **Sensor Type:** Ionization - **Style:** Precision Detection - **Unit Count:** 1 Count ## Images ![Hardwire Combination Smoke & Carbon Monoxide Alarm - Image 1](https://m.media-amazon.com/images/I/71dpUId7V3L.jpg) ## Available Options This product comes in different **Pattern, Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Reliable & Reputable Detectors! *by B***S on October 21, 2025* I have been a master electrician for 32+ years. If you're not 100% sure of what you're doing, hire a professional! Ok a lot of people are complaining about the new connector. It literally takes 60 seconds to rewire. I rewire anyways so I can put a meter on the ceiling wires to make sure everything is as it should be. The base is a tad smaller than my previous ones. They were from a different company though. It presented zero issues during the installation. I have 3 detectors upstairs and one in the basement. I wired them all and they all worked inline perfectly. When one goes off, they all go off. The alarm is very loud and high pitched. It also tests both the smoke and CO² detectors when pushing the test button. You'll get a beep and then another beep. Then it repeats. Meaning they are all working. Bonus each detector comes with a pre installed Duracell 9 volt battery. You also receive a dust cover for the detector if you need to work in that room. Kicking up dust or debris can get inside the unit and fault it. Nice little freebie to have. Although I didn't need, they come with very detailed instructions with diagrams. After I installed them all I tested it my way using certain techniques to get both detectors to alert. They passed on both smoke and CO². For this price point, I am very happy with these units. It gives me a sense of security knowing my family is protected. Please mark the back of your detectors with the date you install them. I use a black marker. Also be sure you were shipped the correct units. It should say on the outside label Combination Smoke/Carbon Monoxide Alarm. I've posted pictures along with a video. I hope this aids with your decision whether these are for your home or not. I will update again if I have any issues in the future. As of now they are working as they should and I again, am very happy with my purchase. ### ⭐⭐⭐⭐⭐ Good replacement *by M***T on October 6, 2026* Easy installation. Works well as replacement for expired alarms. ### ⭐⭐⭐⭐⭐ Clear instructions, zero false alarms, and perfect for our new home! *by D***� on September 19, 2026* We recently bought a new home and made it a top priority to replace all the old, outdated alarms for our family's safety. This 6-pack of First Alert units was the perfect solution to upgrade the whole house at once. Because these are hardwired, we had an electrician handle the installation to ensure the interconnected communication lines were wired safely and correctly. As you can see from my photo, it looks very clean mounted on the ceiling and has a solid green indicator light showing it has power. The precision sensors are excellent because we haven't had a single false alarm from kitchen cooking smoke since putting them up. It gives us total peace of mind knowing that if one alarm triggers, they will all go off throughout the house. If you are moving into a new place and want a reliable, high-quality safety system, this 6-pack is absolutely worth the investment. ## Frequently Bought Together - First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup, 1-Pack - First Alert SMI100-AC, 9120B Replacement Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack - First Alert BRK 9120Bff-6 Hardwired Smoke Detector 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.vu/products/602000076-hardwire-combination-smoke-and-carbon-monoxide-alarm](https://www.desertcart.vu/products/602000076-hardwire-combination-smoke-and-carbon-monoxide-alarm) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-10-23*