--- product_id: 1141944 title: "Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9 -Volt Battery Backup, Model MCND401B,Classic White" brand: "universal security instruments" price: "545.32 DT" currency: TND in_stock: true reviews_count: 6 url: https://www.desertcart.tn/products/1141944-universal-security-instruments-m-series-plug-in-carbon-monoxide-natural store_origin: TN region: Tunisia --- # Digital CO Display 9V Battery Backup Microprocessor Intelligence Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9 -Volt Battery Backup, Model MCND401B,Classic White **Brand:** universal security instruments **Price:** 545.32 DT **Availability:** ✅ In Stock ## Summary > 🔒 Breathe Easy, Live Safely! ## Quick Answers - **What is this?** Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9 -Volt Battery Backup, Model MCND401B,Classic White by universal security instruments - **How much does it cost?** 545.32 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/1141944-universal-security-instruments-m-series-plug-in-carbon-monoxide-natural) ## Best For - universal security instruments enthusiasts ## Why This Product - Trusted universal security instruments brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **5-Year Warranty:** Peace of mind with a robust warranty, because your safety is our priority. - • **Compact & Convenient:** Sleek design that occupies just one outlet, making it perfect for any space. - • **Real-Time Monitoring:** Digital display shows CO levels in real-time, keeping you informed and secure. - • **End-of-Service Alerts:** Built-in signals notify you when it's time to replace the unit, ensuring continuous protection. - • **Stay Safe, Stay Smart:** Reliable plug-in alarm with advanced microprocessor technology to minimize false alarms. ## Overview The Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm is a compact, reliable safety device designed to protect your home from hazardous gases. Featuring a digital display for real-time CO level monitoring and advanced microprocessor technology to reduce false alarms, this alarm is both user-friendly and efficient. With a 9V battery backup and a 5-year warranty, it ensures your safety is always a priority. ## Description Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9 -Volt Battery Backup, Model MCND401B,Classic White ## Features - Reliable plug-in carbon monoxide and natural gas alarm - Microprocessor intelligence helps eliminate nuisance alarms caused by non-hazardous sources - Compact design covers only one outlet — No wiring required - Designed with end-of-service life warning signals and a digital display screen to provide CO parts per million levels and displays "GAS" - Comes with a limited warranty ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Universal Security Instruments | | Style | With Display | | Power Source | Battery Powered | | Color | Classic White | | Item Weight | 7.2 ounces | | Number of Items | 1 | | Manufacturer | Universal Security Instruments | | UPC | 142741204016 | | Part Number | GID-107117 | | Product Dimensions | 2.2 x 4.1 x 1.55 inches | | Item model number | MCND401B | | Batteries | 1 9V batteries required. (included) | | Is Discontinued By Manufacturer | No | | Size | 1-Pack | | Finish | Finished | | Voltage | 120 Volts | | Item Package Quantity | 1 | | Measurement System | English/Standard | | Mounting Type | Protruding | | Plug Format | A- US style | | Certification | UL | | Usage | Ceiling fan | | Batteries Included? | Yes | | Batteries Required? | Yes | | Average Battery Life | 4380 Hours | | Warranty Description | 5 Years | ## Product Details - **Brand:** Universal Security Instruments - **Style:** With Display - **Power Source:** Battery Powered - **Color:** Classic White - **Item Weight:** 7.2 ounces - **Number of Items:** 1 - **Manufacturer:** Universal Security Instruments - **UPC:** 142741204016 ## Images ![Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9 -Volt Battery Backup, Model MCND401B,Classic White - Image 1](https://m.media-amazon.com/images/I/612CzpEZAmL.jpg) ![Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9 -Volt Battery Backup, Model MCND401B,Classic White - Image 2](https://m.media-amazon.com/images/I/61iFXqQ4cQL.jpg) ![Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9 -Volt Battery Backup, Model MCND401B,Classic White - Image 3](https://m.media-amazon.com/images/I/51fYHLw0jCL.jpg) ![Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9 -Volt Battery Backup, Model MCND401B,Classic White - Image 4](https://m.media-amazon.com/images/I/91vFJPK+VBL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Simple and Effecdtive *by J***N on Reviewed in the United States on May 2, 2014* As a new home owner I wanted to make sure that I covered all my bases for protecting my home. If you have ANY gas appliances this unit is a must!The instructions are very simple and easy to follow. At first I installed the unit in my laundry room to make sure that my new gas dryer wasn't leaking and was happy to find that it never went off. However, the instructions do inform you that you should install the unit in an open area not near any gas appliances as then the pilot will light off a small amount of gas may set the alarm.Overall I am very pleased and highly recommend this to any homeowner. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars It detects natrual gas well. *by S***D on Reviewed in the United States on October 6, 2018* So... this RUDELY awoke my wife and I at 2am because it detected natural gas. We didn't smell anything and both of our noses work well, but we asked the gas company to send out a person anyway. While we waited, I unplugged the unit and took out the 9v battery because it was painfully loud. After a few minutes I put the battery back in and plugged it in. About 15 minutes later it started beeping so I again removed all electricity from it.The gas company person soon arrived and determined there was a slow leak and began turning off gas lines while measuring line pressure to determine which one was the problem. While he was doing that I found a very slight gas smell behind the stove and the stove turned out to be the problem.Conclusion:This was plugged into a wall outlet on the second story of a 2700 sq.ft. house and detected a slow natural gas leak from behind a stove on the first floor that was only able to be detected by a healthy nose close to the source.The central air was off at the time so there wasn't air circulation/mixing.After the line to the stove was shut off and I finally got the pilot light ignited on the water heater I powered the unit and it no longer beeped. ### ⭐ 1.0 out of 5 stars I don't trust this detector and here is why *by C***E on Reviewed in the United States on May 17, 2015* I purchased this detector a year ago, for use in a second home. It *seemed* to work fine thru last winter when the house was closed up- I say, "seems to have" since it happily sat there with a glowing green light-- never once giving any alarm. Now reading aall the other reviews I was probably living in a fool's paradise since it seems this detector doesn't detect ANYTHING. We reopen the house this spring, put new batteries in all the house detectors, this one included- and 2 days later, in the dead of the night (dead is a good term to use here), this one goes off. There is nothing like a CO/Gas detector going off in the middle of the night to scare the begeezes out of one's self. However there are 2 other CO monitors about the house (it was the CO part of the alarm that went off) and they did not respond. There was no smell of gas, and the window in the room where this detector was installed was open. The beep-code it gave was for CO, not gas, not battery failure, unit failure, or a 'time to replace unit' sequence. The unit was reset by pressing the reset button, and a CO reading of 49 displayed. This was reset to 0, and the unit reinstalled. We all fell back into an uneasy sleep, but with all the windows open. About dawn it went off again, and again displayed the CO level of 49.Being a scientist at heart, I had to conduct an experiment--, so the unit was plug in to an outside, the reading was reset. It did not go off after that but the "49 PPM CO" reading returned. It is plain from the other reviews and my own experience that the unit can not be trusted. It can not be trusted so much so, that it now resided somewhere in our county landfill. ## Frequently Bought Together - Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9 -Volt Battery Backup, Model MCND401B,Classic White - Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors - Amazon Basics AAA Alkaline High-Performance Batteries, 1.5 Volt, 10-Year Shelf Life, 36 count (Pack of 1) --- ## 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.tn/products/1141944-universal-security-instruments-m-series-plug-in-carbon-monoxide-natural](https://www.desertcart.tn/products/1141944-universal-security-instruments-m-series-plug-in-carbon-monoxide-natural) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-02*