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  • 2-in-1 Universal Smoke Sensing and Fire Alarm
  • Responds 87% faster to slow smoldering fires
  • Responds quickest to fast flaming fires
  • Hardwired alarm with a 10-year sealed battery backup that provides a decade of peace of mind even when the power goes out.
  • Microprocessor eliminates nuisance alarms
  • Power and alarm LED's
  • Test/silence button
  • Product end-of-service life warning
  • Swift installation process
  • Mounting hardware included
  • Loud 85 dB alarm
  • 10 Year Limited Warranty on both the battery and alarm
  • Revolutionary Universal Smoke Sensing Technology
  • Meets New Laws & Legislations - This alarm exceeds industry standards, and is listed to UL Standard UL 217 and is California State Fire Marshal approved.
The USI MI106S Smoke Alarm features a 10-year sealed battery for permanent power and continuous protection in the event of a power outage. Universal Smoke Sensing Technology detects fast flaming fires and slow smoldering fires while microprocessor intelligence virtually eliminates nuisance alarms for the perfect two-in-one home safety protection. Studies show that one of the leading causes of preventable death due to smoke and fire is a deactivated or inoperable alarm. This USI Hardwired Smoke and Fire Alarm is equipped with a 10-year sealed battery that provides a decade in peace of mind, while removing the need for battery replacement. Permanent Power allows you to simply install and activate the alarm for protection that will last for up to 10 years. This gives you maintenance-free battery power, eliminating low battery chirps and the need to buy replacement batteries throughout the life of the alarm. Purchasing a permanent power alarm saves you money and reduces environmental impact by providing environment friendly protection. This USI Smoke Detector reduces environmental waste and eliminates disposal of up to twenty 9-volt batteries.
MI106S23 year battery smoke alarm
Product Details
Product Specs
Smoke & Fire Alarms
Product Manuals

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MI106S customer reviews

Overall Rating

127 Reviews
127 customers recommend this product
USI Hardwired 2-in-1 Universal Smoke Sensing Smoke and Fire Smart Alarm Reviews
Jeffrey C
March 5, 2024
Verified Purchase
2nd purchase from Universal Security Instruments, Inc

This was my second purchase from Universal Security Instruments, Inc. The items were received quickly and were in perfect condition. Their pricing was the best I found. I'm currently working on my third order. Great job. Thanks,

Philip M
December 12, 2023
Verified Purchase
Updating smokes with more features

Full residence old Kidde smokes eliminated and replaced with Hardwired/10 yr battery USI with expanded features. Smokes have been in 2 days. Smooth change out and no false reads as of yet.

Sabrina B
June 14, 2023
Verified Purchase
Replacement units

Easy to replace my 10 year old units. I called in and someone helped me to ensure that I purchased the correct units. Thank you!

John C
February 24, 2023
Verified Purchase

Ordered 4 smoke detectors w/10 year battery. Process was simple delivery was quick and installation went without an issue. My second time dealing with Universal and I will continue to purchase from them.

Brooke B
December 29, 2022
Verified Purchase

Just what I needed

John N
December 2, 2022
Verified Purchase
Easy installation, no false alarms

I installed two of these as replacements. The installation was simple and we haven't had any false alarms.

Terry G
November 29, 2022
Verified Purchase

Great product. Change every 9-10 years instead of changing batteries every 6 months. Easy to change out old inefficient alarms. Once installed, future replacements take 1-2 minutes to install

Edward S
November 4, 2022
Verified Purchase
Excellent Customer Service

When I called to replace my 18 year old hard wired alarms, the agent was extremely helpful regarding both my options and how to do the install myself. Referred me to a Youtube video... shipment came right away at a price lower than I expected.

John A
October 10, 2022
Verified Purchase
Hardwired Smoke Alarm

Item was purchased as a replacement for an expired unit. Unit installed exactly like the one replaced and is working as discribed. I especially like the 10 year sealed battery.

Joseph C
September 27, 2022
Verified Purchase
Easy replacing connected devices

In less than 1 hour I took down 8 old USI devices and replaced them with new ones. Love the 10 year sealed battery, no more semi annual 9v battery replacement.

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