Smoke, Carbon Monoxide, and Natural Gas Detector - IoPhic Sensor - Hardwired with 9V Battery

2 Reviews
Brand: USI
Mfr Part Number: MDSCN111

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Smart Alarm uses a single sensor to detect both CO & Natural Gas AND protects against both fast flaming & slow smoldering fires. Microprocessor Intelligence provides superior nuisance alarm resistance, along with temperature & 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 & quality.

  • IoPhic Responds 87% Faster* To Slow Smoldering Fires
  • IoPhic Responds Quickest to Fast Flaming Fires
  • Microprocessor Virtually Eliminates Nuisance Alarms
  • New Universal Sensing Technology®
  • Product End-of-Service Life Warning
  • Test/Reset Button
  • Quick Draw® Battery Drawer
  • 4 LED's Indicate:Power, Smoke, CO & Gas
  • Interconnectable up to 24 Compatible Devices
  • Tamper Resistant Locking Feature
  • Battery Activation Pull Tab
  • 9 Volt Energizer Alkaline Battery Included
  • Loud 85dB alarm
  • Listed to UL Standards UL 2034, UL 217, UL 1484
  • California State Fire Marshal Approved
  • 7-Year Limited Warranty

Brochures & Spec Sheets

Spec SheetUSI MDSCN111 SpecsDocumentationUSI MDSCN111 Manual

Electrical & Operational Information

Operating Temperature40°F - 100°FWiring TypeLine Voltage, Battery


Alarm TypeSmoke/Fire, Carbon Monoxide, Natural GasColor FinishWhite
Housing MaterialThermoplasticHumidity Range10% - 95%
Sensor TechnologyIonization, Photoelectric, Microprocessor Intelligence

Included Components

Emergency Battery Includedyes

Warranty & Certifications

CertificationsNFPA, CSFMETL Listedyes
Product Warranty7 Years

Dimensions & Measurements

Product Length (in.)1Product Width (in.)6.25
Product Height (in.)8

Ratings & Reviews

2 reviews

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  • 1 star
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5/23/2016 12:00:00 pm

Awesome product

by Storee P -

Love that this unit includes gas, carbon monoxide and fire alarm in one. Not to hard to install.

5/29/2018 12:00:00 pm


by Jenna F. -

Quick delivery. Product is exactly as expected. 5 stars.