Universal Security Instruments MDSCN111 4-In-1 Smoke, Fire, And Gas Hardwired Smart Home Alarm
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Universal Security Instruments MDSCN111 4-In-1 Smoke, Fire, And Gas Hardwired Smart Home Alarm

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Complete Protection From Gas Leaks, Fire, Smoke, And False Alarms
  • Single sensor differentiates between actual carbon monoxide, natural gas, fire, smoke, and nuisance alarms
  • Responds 87% faster to slow smoldering fires and quickly for fast flaming fires
  • 9 Volt back-up battery for emergencies and power outages
  • Connects with up to 24 compatible devices for improved detection and warning
  • Microprocessor Intelligence controls alarm temperature, humidity, and false alarm sensitivity
  • Silence/Test button, power indicator, battery replacement warning, and loud 85 dB alarm

Item #: 74904

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Special Price: $47.94

List Price: $69.99

Your Savings: $22.05

Frequently Bought Together:
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Universal Security Instruments MDS107 Smoke and Fire Hardwired Home Alarm

Special Price: $17.94

List Price: $29.99

Your Savings: $12.05

Price For Both: $65.88

  • Details
  • Specs
  • Reviews
  • What's Included
  • Keep your home safe from carbon monoxide, natural gas, smoke, and fire hazards with Universal Security Instruments' IoPhic Home Hardwired 4-In-1 Smart Alarm. The 4-In-1 alarm is a hardwired wall, or ceiling mounted hardwire alarm system equipped with Microprocessor Intelligence temperature control, humidity control, and false alarm control technology to provide consistent alarm sensitivity and performance without interference from common nuisance alarms such as dust, debris, paint fumes, shower steam, cooking smoke, and household chemicals and cleaners.

    The 4-In-1 alarm system can also be interconnected with up to 24 other similar alarm systems--so when one alarm goes off on the other side of the house, they all sound alerting you to the presence of carbon monoxide, natural gas, smoke, or fire. When it comes to these hazards, small or big, false of true, early detection and warning can give you the few seconds needed to get to safety.

    The alarm that originally detects the presence of carbon monoxide, natural gas, smoke, or fire can be found by simply silencing an alerting alarm and pressing the Test/Silence button to sound the original alarm. The alarm emits a loud 85 dB audible alert that can be hear easily and informs you where the danger is coming from within the home.

    The alarm's interconnectivity, false alarm control, temperature control, humidity control, and loud sound offers you value and quality for protecting yourself, your home, and loved ones.


    Features Benefits
    Advanced smoke recognition Provides 87% faster response to smoldering fires AND responds quickest to fast flaming fires
    Patent pending microprocessor Virtually eliminates nuisance alarms cause by non-hazardous sources such as cooking smoke
    Auto sensitivity calibration Prevents nuisance alarms and provides consistency
    Self-diagnostics feature Performs a status check upon power up to ensure alarm is functioning properly
    Ambient condition compensation Automatically adjusts sensitivity for changes in temperature and humidity, reducing nuisance alarns
    Quick Find alarm origination feature Patented feature easily identifies first alarm to sound in interconnected system
    Quick activation pull tab Preserve battery life. Preinstalled battery is quickly activated without removing alarm from bracket
    Universal mounting bracket Fits any standard wiring junction box, single gang, round or octagon, up to 4°
    Larger mounting base Covers drywall imperfections and old paint marks
    Product end-of-service life warning Sounds when it is time to replace the alarm in approximately 7 years from the date of activation
    Front-load battery drawer Replace battery without removing alarm from bracket
    Interconnectable Up to 24 USI or Universal brand devices using existing wiring and mounting (battery drawer models)
    2 tamper resistant locking features Prevents unauthorized removal of alarm or battery
    9 Volt battery backup Provides continuous protection in the event of power outage


  • Specifications
    Manufacturer Universal Security Instruments, Inc.
    Manufacturer Product No. MDSCN111
    UPC 042741001113
    Dimensions 5.63° x 5.63° x 1.75°
    Weight 0.65 pounds
    Connection Hardwired
    Sensor Type IoPhic Universal Sensing Technology
    Primary Power 120 Volt AC 60 Hz
    Battery Backup 9 Volt Energizer Alkaline Battery
    Audible Alarm 85 dB at 10 feet

    End-of-service life warning
    Temperature Range 32°F to 100°F (0°C to 38°C)
    Humidity Range 5% to 95% RH
    Interconnect Maximum 24 USI/Universal devices
    LED 4 LED's: alarm, power, CO, gas
    Manufacturer Warranty 7 year limited warranty
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    * Required Fields

    • 1x - Universal Security Instruments Smoke and Fire Alarm
    • 1x - 120 Volt AC 60 Hz
    • 1x - 9 Volt Energizer Alkaline Battery
    • 1x - Mounting Bracket

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