Customer Reviews For The USI Electric Hardwired 2-in-1 CO and Natural Gas Alarm, Battery Backup
Michael H
October 28, 2022Delivery was on time and they had the product that I needed.
Michael H
October 26, 2022Delivery was on time and they had the product that I needed.
Stephen M
August 18, 2022MCN108
Easy to install. No programming required. Simple read out
Barry S
July 16, 2022CO and Natural Gas Detector
Item performed as stated
Helen B
June 16, 2022GOODâï¸
David L
February 27, 2022USI Electric Carbon Monoxide and Natural Gas
This alarm replaced my previous hard-wired USI Carbon Monoxide alarm. It was reasonably priced and delivered to my home on time. It was very easy to install as the electrical connector was the same as my previous model. It also detects Natural Gas as an added bonus. Overall, I am very pleased with this purchase and would recommend it.
Alberto N
December 31, 2021Good Experience
Good experience ordering on website. Delivery of product and product itself.
Kris J
November 17, 2021Good product
Product works great
Ross K
November 9, 2021Smoke replacement
I was pleasantly surprised this company was still producing after there product has been in homes.for 10 years. Thanks for providing me a 1 for 1 swap option you saved me a lot of time.
James D
October 21, 2021USI Product and Service
Typical quality product from USI, with a good selection of options and ease of installation. I continue to purchase from Universal because of their excellent customer service, very prompt order fulfillment and shipping.
Michael A
April 12, 2021Outstanding alarm
So I was trying to exactly match the CO2/gas alarm we had and this one was the exact match. The alarm arrived promptly and works great!
Karl Gontkof
November 12, 2020MCN108 2-in-1 CO2 & Natural Gas Alarm
I have used the USI 2-in-1 CO2 and Natural Gas models for over 15 years. The product works well, however it doesn't always live a 7 yr life
Debra Stec
July 31, 2020Love them. They work really good.
James Morehouse
July 2, 2020Easy Installation
The alarms in the house I purchased at the end 2018 had these alarms, and I noticed they were already three years out of date, and were still working. I decided to replace them with these from the same company, as they seem to be pretty reliable.
Ralph Stamm
January 20, 2020Replacing existing detector was a snap
This new detector was replacing an existing one, which was at its end of life. The installation was very easy and quick. I will definitely be purchasing any detectors I need from USI in the future.
Jacob Eddy
January 6, 2020Carbon/gas hardwire
Work as advertised and shipped quickly
Stephen Signore
July 1, 2019Excellet
Perfect product, perfect fit and quick shipment. Highly recommend.
Robert Corwin
July 1, 2019Had no problem with the setup plugged it in at work fine and continues to work fine
Roberta Leevers
February 27, 2019Worked perfectly
These units worked perfectly and were easy to install.
Kris Jones
February 22, 2019CO2 and Nat Gas alarm
This is a very good product. My previous alarm lasted 10 years and this is the newer version of this. Easy to plug in and works great so far.
- 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.
Carbon Monoxide and Natural Gas Detection
The USI Electric MCN108 Hardwired Carbon Monoxide and Natural Gas Smart Alarm is a 2-in-1 device that provides double the protection with a single installation. This dual-sensing alarm protects against two deadly household threats: carbon monoxide and natural gas (or methane). Perfect for new or replacement installations, the 120-volt AC/DC hardwired alarm is suitable for houses, apartments and mobile homes.
Auto sensitivity calibration provides superior nuisance alarm protection and creates consistency in alarm sensitivity. This alarm has additional automatic features including a self-diagnostics check to ensure proper operation, a sensitivity adjustment for changes in temperature or humidity and an end-of-service life warning that sounds when it's time to replace the battery. The 9-volt alkaline battery (included) continues protection in the event of a power outage.
This carbon monoxide and natural gas alarm features a quick activation pull-tab and a front-loading battery drawer for replacement without removing the alarm from the bracket. Mount the bracket to any standard wiring junction box and use the large mounting base to cover imperfections in drywall. The plastic dust cover protects the alarm from debris and (2) tamper-resistant locks prevent unwanted alarm or battery removal.
For maximum protection, install an alarm inside every bedroom, outside every sleeping area and on all levels of the dwelling. The USI Electric MCN108 Hardwired Carbon Monoxide and Natural Gas Smart Alarm comes with a 7 year limited warranty.