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    New Sensing Plus® Multi Criteria Detection Alarms

    Include the latest in smoke and fire safety enhancement features while conforming to the new UL 217 8th Edition standards

    Sensing Plus Alarms
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Home / Products / Smoke & Fire Alarms

USI Kitchen 2-in-1 Smoke & Fire Smart Alarm with 10 year Sealed Battery & Universal Smoke Sensing Technology (MDSK300S)

  • USI Kitchen 2-in-1 Smoke & Fire Smart Alarm with 10 year Sealed Battery & Universal Smoke Sensing  Technology (MDSK300S)
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Tamper proof design
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Regular: $29.95
Price: $20.95
You Save: $9.00 (30% Off)
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6 Pack
Save 5%

Bundle Price: $113.70

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - 9 Customer Reviews
  • Features
  • Description
  • 10 Year Permanent Power
  • Manuals
  • Video
  • Bulk
  • Rate-of-Rise feature differentiates between cooking and a real fire.
  • Reduces the chance of nuisance alarms from cooking steam.
  • Tamper proof design provides a higher level of security to prevent battery removal.
  • Provides a decade in peace of mind.
  • Features the benefits of both photoelectric and ionization technology in one alarm
  • Maintenance Free Battery Power.
  • Never replace batteries for 10 years, saving up to $38.00 over the life of the alarm.
  • Eliminates annoying low battery chirps.
  • 10 year sealed batteries provide continuous protection, even in the event of a power outage.
  • Smart Alarm Technology virtually eliminates nuisance alarms.
  • Combines the benefits of photoelectric & ionization technology in one alarm.
  • Quick activation battery pull tab makes this fast and easy to install.
  • Deactivation key switches alarm off and makes batteries safe for disposal (once alarm reaches the 10 year product end of service life).
  • Tamper resistant feature prevents deactivated alarm from being reinstalled.
  • Choose this alarm if you are looking for an alarm with superior nuisance alarm resistance.
  • 10 year product end‐of‐service life warning sounds when it is time to replace alarm.
  • This alarm is suitable for installation in houses, apartments, dormitory and manufactured housing.
  • Meet New Laws & Legislation - This alarm exceeds industry standards, and is listed to UL Standard UL 217 and is California State Fire Marshal approved.
  • ECO Friendly, reduces environmental waste & eliminates disposal of up to twenty 9 volt batteries.
  • 10 year limited warranty on both battery and alarm.
  • Revolutionary Universal Smoke Sensing Technology

The Universal Security Instruments MDSK300S 2-in-1 Smoke and Fire Smart Alarm provides 10 years of continuous protection against deadly threats in the home. New patented Universal Smoke Sensing Technology provides the benefits of both photoelectric and ionization alarms in one device to protect against fast flaming and slow smoldering fires. The patented Rate-of-Rise Feature will differentiate between cooking smoke/steam and real fire. Perfect for new or replacement installations, this maintenance-free alarm is suitable for houses, apartments and mobile homes in every room.

The sealed battery (included) will never have to be replaced throughout the life of the alarm, giving you a decade's worth in peace of mind even in the event of a power outage. Permanent Power also saves money from battery replacements (up to $38.00 over the 10-year life of the alarm), eliminates annoying low battery chirps and helps the environment by reducing environmental waste from disposed batteries.

The perfect replacement for existing USI Detectors, this USI Smoke and Fire Alarm features a large mounting base to cover imperfections in drywall and the option to replace retrofitting applications. The quick activation battery pull tab makes it easy to install while the deactivation key switches the alarm off and makes the alarm safe for disposal. Once the alarm is deactivated, the tamper resistant feature turns on to prevent deactivated alarms from being reinstalled.

This alarm conforms to UL 217 Standards. It has also been approved by the California State Fire Marshal and Federal Housing Authority (FHA) to exceed industry standards. For maximum protection, install an alarm inside every bedroom, outside every sleeping area and on all levels. The Universal Security Instruments MI3050SB 2-in-1 Smoke and Fire Smart Alarm comes with a 10-year limited warranty that covers both the battery and alarm. Universal Security Instruments is a U.S. based manufacturer of high quality, easy-to-install home safety products. Founded in 1969, Universal Security Instruments has over 40 years of heritage in providing home safety products for families. With state-of-the-art manufacturing facilities, Universal Security Instruments continues to launch revolutionary new products and technologies with the mission of always working to keep families protected.

Product Details
  • Warranty: 10 Year Limited Warranty on both the battery and alarm
  • Alarm Battery: 10 Year Sealed Permanent Power Battery
  • Alarm Sensor Type: Universal Smoke Sensing Technology
  • Manufacturing Credits: ISO 9001 certified factory, UL listed & CSFM listed
  • Package Dimensions (W x H x D): 5.75 x 5.75 x 1.75 in.
  • Product Weight: 0.49 lbs.
Product Specs
UPC:
042741803007
MPN:
MDSK300S
Category:
Smoke & Fire Alarms
  • USI MDSK300S Kitchen Smoke Alarm Manual
USI Kitchen 10 Year Sealed Battery Smoke & Fire Smart Alarm (MDSK300S) Videos
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Customer Reviews

5

Average score based on 9 reviews

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5
Write A Customer Review Review
USI Kitchen 10 Year Sealed Battery Smoke & Fire Smart Alarm (MDSK300S) Reviews

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 05/12/2018 by Jen S.

Best alarms

I did a lot of investigation before I ordered new alarms. These had all of the options I wanted and they are so much cheaper than the other name brands. I installed them very easily myself and they have been great. Never had any false alarms. There are no annoying lights. I really like that they have different ones specifically for the hallway, bedrooms, and the kitchen. The previous brand I had in the kitchen went off every time I opened the oven. These don't since it senses the difference between steam and real smoke. These have USST technology which is much better than the other brands. I highly recommend this brand.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 02/23/2018 by don lafferty

Easy to install

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 12/20/2016 by William Reupke

Good resistance to nuisance alarms

Received in good order. A similar unit recently installed works very well. Would recommend to any purchaser.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 11/29/2016 by William Reupke

Good resistance to nuisance alarms

USI kitchen detector was easily and neatly installed. Performed very well in discriminating against steam from cooking. Eager to see performance with burnt toast.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 09/23/2016 by Edward Olson

Simple install

Like the sealed long lasting battery.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 08/16/2016 by Dewey Benedetti

Great purchase

Installed it on 8-3-16 and as of today no false alarms in the kitchen when preparing meals. I would recommend the 2 in 1, it's a great buy!

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 05/23/2016 by Gary Mitchell

Super easy to install

We didn't get anything going in the kitchen yet to test it, but it installs very easily.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 03/20/2016 by joseph gangloff

cool -- slow rise feature / unique product advantage

low rise feature is excellent improvement over competing brands

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 12/14/2015 by michael manger

Everything is great, very happy with the product that its has both types of sensors.

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New Technology

  • Sensing Plus smoke alarms

    Sensing® Plus

    AI-artificial intelligence can classify smoke & fire profiles.

  • universal smoke sensing technology

    USST Dual Sensing

    Responds to both fast flaming and slow smoldering fires.

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