6 Pack of Universal Security Instruments Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarms with Battery Backup
- 2-in-1 Carbon Monoxide and Natural Gas Alarm
- 120-Volt AC Plug-In Alarm with Battery Back-Up
- Back-up Battery Continues protection in the event of a power outage
- 9-Volt Energizer Alkaline Battery Included
- Digital Display Screen with Three LED Colors Indicating Power, CO and Natural Gas
- Quick Activation Pull Tab
- Microprocessor Software Virtually Eliminates Nuisance Alarms
- Compact Plug-in Design
- No Additional Mounting Required
- Swift Installation Process
- 5 Year Limited Warranty
- Meets New Laws & Legislations - This alarm exceeds industry standards, and is listed to UL Standard UL 217 and is California State Fire Marshal approved.
Dual Threat Defense: Comprehensive Home Protection
The Universal Security Instruments Electric MCND401 Plug-In Carbon Monoxide and Natural Gas Smart Alarm offers essential dual protection against two silent but deadly household threats: carbon monoxide (CO) and natural gas. This innovative 2-in-1 device simplifies home safety, combining two critical detectors into one compact unit. Its convenient plug-in design allows for easy installation into any standard electrical outlet, requiring no professional setup. This makes the alarm an ideal safety solution for a wide range of residences, including homes, apartments, and mobile homes, providing immediate peace of mind.
Intelligent Features for Enhanced Awareness
Equipped with advanced features, this smart alarm provides crucial real-time information and reliable detection. A clear digital display shows current carbon monoxide levels in parts per million (PPM), allowing you to monitor CO concentration and take prompt action if thresholds are exceeded. Utilizing microprocessor intelligence, the alarm analyzes readings to minimize false alarms, ensuring dependable detection without unnecessary disruptions. The plug-in detector records peak CO levels, which can help identify potential CO sources or trends. For natural gas detection, the unit provides an early warning of leaks, with a visual "GAS" indicator on the display for immediate alerts.
Certified Reliability and Long-Term Safety
The USI Carbon Monoxide and Natural Gas Detector is designed for long-term reliability and safety. It features an end-of-service life warning, alerting you when the unit needs replacement (approximately 7 years after activation). A 9-volt alkaline battery (included) ensures continuous protection even during power outages. This alarm is built to exceed industry standards, being ETL Listed to UL Standard 2034 & UL1484, California State Fire Marshal approved, and Federal Housing Authority (FHA) approved. For maximum protection, it's recommended to install an alarm inside every bedroom, outside every sleeping area, and on all levels of your home. The Universal Security Instruments Electric MCND401 Smart Alarm comes with a 5-year limited warranty, adding an extra layer of assurance.
Recommended replacement for the following obsolete models:
- CD-9690
- If the Alarm is exposed to 400 ppm of CO, it must alarm between 4 and 15 minutes.
- If the Alarm is exposed to 150 ppm of CO, it must alarm between 10 and 50 minutes.
- If the Alarm is exposed to 70 ppm of CO, it must alarm between 60 and 240 minutes.
- Warranty: 5 year Limited Warranty
- Alarms Power Source: 120 volt (plug In & battery backup)
- Alarm Sensor Type: Metal Oxide
- Manufacturing Credits: ISO 9001 certified factory, UL listed & CSFM listed
- Packaging: Easy Open Box Packaging
- Product Dimensions (W x H x D): 2.5 x 4.38 x 1.55 in.
- Product Weight: 0.57 lbs.
If you are interested in ordering a large quantity of items you may qualify for volume pricing discounts. Volume Discount Pricing is a great way for customers to save big on large, bulk orders of most items available in our store. Please send a bulk order request to our friendly sales staff so they may create a quote and provide personal service for your order! You will receive a response within 1-2 business days and our office hours are Monday through Friday, 8am-5pm CST.
- Let us know what products & the quantities you are interested in.
- Get a detailed quote from a dedicated sales rep.
- Our warehouse ships directly to you.
- You enjoy the savings & are now a preferred customer.

USI Digital Display Plug-In 2-in-1 CO and Natural Gas Smart Alarm Reviews
This is an excellent detector that provides peace of mind for the entire family. The sleek design and simple buttons are indicative of a thoughtful, efficient product. The battery back up feature in the event of a power loss is a bright idea. Simply a superb product!
Very happy with product and received the product in a timely manner. Easy to install and monitor
As advertised. Arrived quickly. Hopefully it works if there is ever co2 or natural gas in house
So far it works well!! No problems at all!!
Items performed as advertised
Installed near our living room where the gas fireplace is. You just never know when things could happen, it's good to know that this unit is there to alert us.
It couldn't be easier to be protected from the deadly airborne killers, carbon monoxide and natural gas. Simply plug it into a wall socket, set an expiration date on your iPhone and your good to go. Just forget about it!
I find the product to be exactly what i needed in the house. I have a generator & this product fits perfectly. Fast delivery & easy to install. Certainly creates peace of mind in the entire house, knowing it is working to keep the family saye. Thank You.
It is hard to test a Carbon Monoxide and Natural Gas monitor, but the Unit quality appears to be high and the packaging was very minimal.
Received the product quickly. Very easy to install & provides the security I need within the house. Really like the 2 in 1 feature with the battery backup, adds the safety & peace of mind for the family. Thanks.