USI 10 Year Battery Smoke and Fire Alarm With Sensing Plus Technology - AMI3051SB
- 2-in-1 Smoke and Fire Smart Alarm provides 10 years of continuous protection against fast flaming and slow smoldering fires.
- New Security Sensing Plus® multi criteria smoke & fire sensor uses AI-artificial intelligence techniques that can differentiate and classify smoke & fire profiles.
- 10 year permanent power via lithium-free alkaline battery (included) will never have to be replaced throughout the life of the alarm.
- Built-in microprocessor eliminates virtually all nuisance alarms.
- Maintenance free battery power provides 10 years of safety protection.
- Power and alarm LED's
- Test/silence button
- Loud 85 dB alarm
- Tamper-proof design prevents other from tampering with alarm's battery.
- 10 year warranty on both battery & alarm
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USI 8th Generation Smoke Detector meets the latest industry standards.
The Universal Security Instruments AMI3051SB 2-in-1 Sensing Plus® Smoke and Fire Alarm provides 10 years of continuous protection against deadly threats in the home. New Sensing Plus® Multi-Criteria Detection provides the benefits of both photoelectric and ionization alarms in one device to protect against fast flaming and slow smoldering fires. Perfect for new or replacement installations, this USI Smoke Detector is suitable for houses, apartments and mobile homes. 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.
10 Year 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. This smoke and fire detector features microprocessor intelligence that assists in completely eliminating nuisance alarms, a single silence/test button to quiet a non-hazardous alarm and an end-of-service life warning that sounds when it's time to replace the smoke detector's battery (approximately 10-years from activation).
Perfect for replacing existing USI Smoke Detectors, this 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 batteries safe for disposal. Once the 10 year smoke and fire alarm is deactivated, the tamper resistant feature turns on to prevent deactivated alarms from being reinstalled.
Bring Your Home up to Code with 8th Generation Alarms
Exceeding industry standards and meeting the latest UL 217 8th Edition for smoke detection, this smoke and fire detector features approvals from the California State Fire Marshal and Federal Housing Authority (FHA) for ultimate peace of mind. Its innovative Sensing Plus® Multi-Criteria Detection provides a trifecta of benefits: minimizing nuisance alarms from cooking, detecting both slow-smoldering and fast-flaming fires (including those in polyurethane foam), and remaining operational even during electrical surges.
For maximum protection, install a USI Smoke Detector inside every bedroom, outside every sleeping area and on all levels. The USI AMI3051SB 2-in-1 Sensing Plus® Smoke and Fire Alarm comes with a 10-year limited warranty that covers both the battery and alarm.

Meets New Laws & Legislations
This alarm exceeds industry standards, and is listed to UL Standard UL 217 8th Edition and is California State Fire Marshal approved.
Battery-operated smoke alarms are a simple yet highly effective way to provide crucial fire protection for any home. Unlike hardwired alarms that are permanently connected to a building's electrical system, battery-operated alarms are completely self-contained, drawing all their power from a single, internal battery. This design provides maximum flexibility and convenience, as the alarms can be installed in virtually any location without the need for an electrical outlet or complex wiring. They are a popular choice for renters, those living in older homes without modern electrical systems, or for anyone looking to quickly enhance their home's safety by adding an alarm to a new location. While some models still rely on replaceable batteries that must be changed annually, modern technology has introduced advanced 10-year sealed battery models that offer a decade of maintenance-free, continuous protection, eliminating the risk of a dead battery.
Advantages of a Battery Operated Smoke Alarm
- Ease of Installation: No wiring is required. You can simply mount it with a few screws and it's ready to go. This makes it a perfect DIY project for anyone, regardless of their electrical expertise.
- Flexible Placement: Because they are not tied to your home's electrical wiring, you can place them in a wide variety of locations, including older homes where wiring may be impractical or costly to install.
- Continued Operation During Power Outages: Unlike hardwired alarms that rely on a battery backup, a battery-operated alarm will continue to function normally during a power failure, ensuring uninterrupted protection.
- Cost-Effective: The initial purchase price of a standard battery-operated alarm is typically lower than a hardwired unit, and it saves you the expense of hiring an electrician for installation.
Advantages of a 10 Year Battery Operated Smoke Alarm
- Maintenance-Free for a Decade: With a sealed battery alarm, you never have to worry about replacing the battery for the entire 10-year lifespan of the alarm.
- Eliminates Low-Battery Chirps: A constant source of frustration for many homeowners, the low-battery chirp is completely eliminated. The alarm will only chirp with an "end-of-life" warning after 10 years, letting you know it's time to replace the entire unit.
- Tamper-Proof: Since the battery is sealed within the unit, it cannot be removed or tampered with. This ensures the alarm is always powered on and ready to detect smoke or fire, addressing a common safety risk.
The USI 10 Year Battery Smoke and Fire Alarm with Sensing Plus Technology (AMI3051SB) is an advanced, battery-powered solution designed for ultimate convenience and long-term protection. As a battery-operated alarm, it offers unparalleled flexibility and ease of installation. You can place it virtually anywhere in your home—inside bedrooms, outside sleeping areas, and on every level—without the need for complex wiring or professional installation. This is especially ideal for apartments, mobile homes, or for homeowners who want to quickly add an extra layer of safety to their property without the hassle of electrical work. The alarm is ready to go right out of the box with a quick activation battery pull tab, providing instant and reliable fire detection.
This battery smoke alarm incorporates Universal Security Instruments' innovative Sensing Plus Technology. This advanced, multi-criteria sensor is a major leap forward in fire detection, combining the strengths of both photoelectric and ionization alarms into a single device. The alarm uses artificial intelligence to differentiate and classify smoke profiles, allowing it to quickly and accurately detect both fast-flaming and slow-smoldering fires. This technology also virtually eliminates nuisance alarms caused by everyday activities like cooking, which is a leading reason people disable their alarms. By providing a smart, reliable, and hassle-free solution, the AMI3051SB smoke detector offers a superior level of safety that works for a full decade with no battery changes required.

- Warranty: 10 Year Limited Warranty on both battery and alarm
- Alarm Power Source: 10 Year Sealed Permanent Power Battery
- Alarm Sensor Type: New Security Sensing Plus Multi Criteria Detection Technology (Ionization & Photoelectric)
- ETL Certifications: UL 217 8th Edition
- Manufacturing Credits: ISO 9001 certified factory & CSFM listed
- Packaging: Easy Open Box Packaging
- Product Dimensions (W x H x D): 5.63 x 5.63 x 1.75 in.
- Product Weight: 0.42 lbs
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10 Year Sealed Battery Smoke and Fire Alarm Reviews
We have had Universal products for years. Just moved and we installed them in our new home. We figure that the natural gas detector has saved us three times already. Smoke detector works well too.
Starting in 2016 as our (9Volt) alarm batteries failed I have replaced them with Universal Alarms with a 10 year life span. This allows us to eliminate the yearly replacing of batteries at various times over the years. The only way to go!
Ordered six of these online. Spoke to a salesperson first, very helpful. Units were very simple to install. Much more comfortable knowing these are a combination alarm.
These units replaced several older ones over 10-years old... advanced, compact, and easy to install and test.
After thorough review of brands and features I chose Sensing Plus because it has the most current 2022 industry standards for smoke alarms. They were easy to install in the same location as the old ones that were other brands. I ordered directly from USI Store to ensure they weren't expired or had been sitting in inclement weather.
I've been looking for a detector that doesn't give error beeps when in high humidity. Given my location in the tropics this works great so far!