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  • Universal Smoke Sensing Smoke and Fire Alarm
  • Responds 87% Faster to Slow Smoldering Fires
  • Responds Quickest to Fast Flaming Fires
  • 9 volt Lithium Battery Operated
  • 10-Year Long Life Battery Included
  • Microprocessor Eliminates Nuisance Alarms
  • New Universal Smoke Sensing Technology
  • Power and Alarm LED's
  • Test/Silence Button
  • Product End-of-Service Life Warning
  • 2 Tamper Resistant Locking Features
  • Swift Installation Process
  • Mounting Hardware Included
  • Loud 85 db Alarm
  • Listed to UL217 Standard
  • California State Fire Marshal Approved
  • 10 Year Limited Warranty
The Universal Security Instruments MDS300L Smoke and Fire Alarm responds quickly to both fast-flaming and slow-smoldering fires to protect your family against deadly threats in the home. Perfect for new or replacement installations, the MDS300L is suitable for houses, apartments and mobile homes. Universal Smoke Sensing technology responds 87-percent faster to slow smoldering fires and responds quickest to fast-flaming fires. 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 lithium battery (included) operates the alarm and provides 10 years of continuous protection without battery replacement.

This alarm features a front-loading battery drawer for replacing the battery 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. For maximum protection, install an alarm inside every bedroom, outside every sleeping area and on all levels of the dwelling. The Universal Security Instruments MDS300L Battery-Operated Universal Smoke Sensing Smoke and Fire Alarm comes with a 10 year limited warranty.
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Smoke Alarms
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