Universal Security Instruments MDS300 Smoke and Fire Wireless 9 Volt Battery Home Alarm
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Universal Security Instruments MDS300 Smoke and Fire Wireless 9 Volt Battery Home Alarm

Reduce False Alarms From Cooking Smoke and Shower Steam
  • Single sensor differentiates between actual smoke and fire, and nuisance alarms
  • Responds 87% faster to slow smoldering fires and quickly for fast flaming fires
  • Wireless, 9 Volt battery powered IoPhic smoke and fire alarm
  • Microprocessor Intelligence controls alarm temperature, humidity, and false alarm sensitivity
  • Silence/Test button, power indicator, battery replacement warning, and loud 85 dB alarm

Item# 74903 PRODUCT IS UNAVAILABLE

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Price For Both: $41.24

  • Details
  • Specs
  • Reviews
  • What's Included
  • Keep your home safe from smoke and fire hazards with Universal Security Instruments' IoPhic Home Wireless 9V Battery Smoke and Fire Alarm.The alarm is a wireless wall, or ceiling, mounted battery powered 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 2-In-1 alarm system emits a loud 85 dB audible alarm that can be heard easily and informs you of smoke and fire in the home from slow smoldering of fast flaming fires. The alarm that originally detected the presence of smoke and fire can be silenced with the Test/Silence button. Not only does the alarm sound when smoke or fire is detected, but the alarm will alert you when a new battery is needed. The alarm provides an easy access drawer for the battery compartment with no need to remove the alarm system from the wall or ceiling.

    The alarm's 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 than conventional smoke alarms
    Auto sensitivity calibration Eliminates inconsistencies which lead to nuisance alarms
    Self-diagnostics feature Performs a status check upon power up to ensure alarm is functioning properly
    Ambient condition compensation Automatically adjusts sensitivity for temperature and humidity conditions
    Quick Find alarm origination feature Easily identifies first alarm to sound
    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
    End-of-service life warning Warning sounds when it is time to replace the alarm after approx. 10 years from date of activation
    Front-load battery drawer Replace battery without removing alarm from bracket
    Single silence/test button Temporarily quiets nonemergency alarms and tests alarm functionality
    2 tamper resistant locking features Prevents unauthorized removal of alarm or battery
    Long life alkaline battery Provides protection in the event of power outage


  • Specifications
    Manufacturer Universal Security Instruments, Inc.
    Manufacturer Product No. MDS300
    UPC 042741003001
    Dimensions 5.63° x 5.63° x 1.75°
    Weight 0.84 pounds
    Connection Wireless
    Sensor Type IoPhic Universal Sensing Technology
    Primary Power 9 Volt Energizer Alkaline Battery
    Audible Alarm 85 dB at 10 feet

    End-of-service life warning
    Temperature Range 40°F to 100°F (4°C to 38°C)
    Humidity Range 5% to 95% RH
    LED Red=alarm
    Regulatory Compliance Underwriters Laboratories (UL-US)

    Underwriters Laboratories Canada (ULC)

    California State Fire Marshal (CSFM)

    National Fire Protection Association (NFPA)

    Housing and Urban Development (HUD)

    Federal Housing Authority (FHA)

    Manufacturer Warranty 10 year limited warranty
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    • 1x - Universal Security Instruments Smoke and Fire Alarm
    • 1x - 9 Volt Energizer Alkaline Battery
    • 1x - Mounting Bracket

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