Model # MDSCN111

Internet #203672641

Store SKU #1000048211

Universal Security Instruments AC Hardwired Iophic Smoke/Fire Carbon Monoxide and Natural Gas Alarm with Battery Backup

Universal Security Instruments

AC Hardwired Iophic Smoke/Fire Carbon Monoxide and Natural Gas Alarm with Battery Backup

  • Working smoke alarms cut the risk of dying in a home fire in half
  • Natural gas leaks can be undetecable by the sense of smell alone
  • 9 out of 10 carbon monoxide incidents take place in the home
$39.99 /each

Frequently Bought Together

Product Overview

Universal Security 4-in-1 Smart Alarm uses a single sensor to detect both CO and Natural Gas and protects against both fast flaming and slow smoldering fires. Microprocessor Intelligence provides superior nuisance alarm resistance, along with temperature and humidity compensation, self-diagnostics and Quick find alarm origination features. Perfect for new or replacement installations. This 120-Volt AC/DC hardwired alarm offers time-saving installation features, value and quality.

  • 120-Volt AC wired-in
  • 9-Volt battery backup (battery included)
  • Microprocessor virtually eliminated nuisance alarms
  • Product end-of-life service warning
  • Test/reset button
  • Quick draw battery drawer
  • 4 LED's indicates power, smoke, co and gas
  • Interconnect able up to 24 compatible devices
  • Loud 85 dB alarm
  • 7 year limited warranty

  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

what does hard wired mean?

Asked by: rt
Hard wired means the detector is wired to the electrical service, requiring a electrical box, installing wire. You will need to hire a good electrician to in stall the detector. Suggest you get a plug-in unit which you simply plug into an available outlet at the point of use.
Answered by: Jake
Date published: 2016-01-12

Will this detect propane

Asked by: SaraAnarchy
The Universal model MDSCN111 4-in-1 alarm protects against Smoke + Fire + Carbon Monoxide + Natural Gas (methane). It does not detect propane.
Answered by: USI Product Expert
Date published: 2016-11-13

What does this mean ".....interconnect able up to 24 compatible devices": that they can be daisy chained?

I'd like one that could actuate a ventilator or some kind of exhaust fan
Asked by: Marc
It can be connected and wired to up to 24 compatible units.
Answered by: CommunityAnswer
Date published: 2016-12-14

Our power went out earlier and now it's back on the blue led on our detector is flashing, what does it mean?

Asked by: TJ

Will this alarm detect propane? Please.

Asked by: VBot
This will detect Carbon Monoxide,Natural Gas or Smoke.
Answered by: CommunityAnswer
Date published: 2016-11-13
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Customer Reviews

AC Hardwired Iophic Smoke/Fire Carbon Monoxide and Natural Gas Alarm with Battery Backup is rated 3.1 out of 5 by 17.
Rated 1 out of 5 by from I bought 3 of these less then 2 years ago, and 2 are already defective I put an addition on my house less than 2 years ago, and bought all new smokes/smoke CO detectors throughout my whole house. I bought these because they weren't cheap, and I figured id be getting what I paid for. Well, already 2 of the 3 CO detectors are defective and beeping all the time giving false alarms. Ive had my local fire department verify it because I didn't want to take a chance that they were actual real alarms. Ive tried contacting the manufacturer 4 different times now, and I haven't received one call back or an email. do your self a favor and DO NOT BUY THESE!!!!
Date published: 2016-07-06
Rated 5 out of 5 by from Great product I was looking to add a CO2 monitor in my basement and his product worked very well. Plus it also monitors for a gas leak which is a bonus. Install was very easy.
Date published: 2017-01-03
Rated 1 out of 5 by from I would give zero stars if I could Worked for less than a year and constantly gave off false alarms for CO (always in the middle of the night!). Replaced batteries and continued to get false alarms. Contacted the company and they were less than helpful and charged me $11.00 for a replacement that I still have not received. While still waiting for a replacement another one of the alarms has also stopped working. Waste of money, just another worthless piece of garbage made in china.
Date published: 2016-03-17
Rated 1 out of 5 by from Chirping noise will drive you crazy Thought I was being diligent & replaced all our 10 yr. old units with these new ones, 6 total. Within a week, one began chirping intermittently, waking the household. Replaced battery. Days later, same thing. Replaced the battery, & now two weeks later, the same chirping that never ceases! They are worthless & should be recalled! Will be removing all six & demanding a refund!
Date published: 2016-07-28
Rated 5 out of 5 by from Best Smoke Alarm on the Planet Best smoke alarm on the planet. I have had clients put these in a number of houses that were getting false alarms all the time. Now they have none. In houses where alarms had been ripped out of the ceilings because of false alarms, now the alarms stay put, changing an unprotected house into a safe one. In my own house we had problems every week: humid days, neighbor firing up his wood boiler, dinner being ready, etc. Now we have no problems at all. Plus, I don't have to run around the house looking for a flashing light that tells me which unit is causing the alarm. A push of the button, on ANY alarm will cause only the offending alarm to beep, making it easy to find. This detector also solves the problem of alarms that are out of reach, as I can silence that alarm from one that is mounted at a more convenient height. Their website says this alarm, according to a university study, is the fastest responding alarm out there to detect fast flaming fires, which you would get an ionization alarm for. It responds 87% faster (than required?) for slow smoldering fires, which you would get an ionization alarm for. Better than both kinds, and the "Microprocessor Intelligence" might be just a cool way to market it, but it really did eliminate all the false alarms in my home, and my clients' homes.
Date published: 2015-11-06
Rated 1 out of 5 by from Lasted 1 year Installed and worked fine for just over a year. Waited until I was away and gave false CO alarm twice in one day. FD at house twice, no CO present either time, and no alarm from 2 other CO detectors. Replaced with another brand.
Date published: 2015-08-05
Rated 1 out of 5 by from False alarms I bought two of these to replace my hard-wired smoke detectors; I installed one on each floor. Within a couple of weeks the upstairs one started to beep. This leads to the next problem.... You have to look through a 21 row table in the instructions to determine what it is trying to signal. Was it 3 beeps, 2 second pause, repeat or was it 4 beeps, 5 second pause, repeat? Also, you must check which LED is lit or off or blinking. So you look in the instructions for an illustration of the layout of the LEDs. Nope, there isn't any. I don't know about other people, but I cannot read the small plastic molded letters on the detector when it is mounted on the ceiling. So I get a ladder and climb up to determine which LED is which. After all that, I determined It was signaling a CO problem. However, the four other CO detectors in the house were silent - two CO detectors had a digital readouts of zero. I swapped the upstairs and downstairs detector, and within a few weeks, beeping again. Same procedure of looking through the instructions and getting out the ladder. This time it was signalling a GAS problem. I didn't smell the distinct odor of gas, so I swapped the detectors again. No beeping for either detector after the swap. Now, the problematic detector is upstairs again and within a few weeks it is beeping again. Same CO alarm and the other CO detectors in the house are silent. This detector is going in the trash. Two detectors, with one turning out to be problematic. 50% is not a good indicator of quality for me.
Date published: 2015-05-25
Rated 1 out of 5 by from Did not work Problem is that its complicated, in that needs battery only as the backup and needs to be connected to hard wire. OK, so I did all that, and guess what, it still keeps beeping every 40 secs. I had to read thru the fine printed brochure/guide, and whatever is says for "40 sec" signal does not apply. To think that I recommended this to many of my friends only to write again and tell them that it did not work out. Idea is just great, 4-1, and I really need that! Now, thinking that my 2 units were faulty batch, I tried ordering again, but it does not ship to CA any more :(
Date published: 2015-08-03
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