BRK SMI105-AC

Description
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BRK SMI105-AC Hardwired Smoke Alarm with 10-Year Battery Backup

The BRK Model SMI105-AC is a premium, AC-powered smoke alarm engineered for continuous whole-home protection. Utilizing an advanced dual ionization sensing chamber, this unit provides earlier warnings for fast-flaming fires while significantly reducing nuisance alarms.

Designed for seamless integration and maximum reliability, it features a 10-year factory-locked 9V Lithium battery backup to ensure uninterrupted operation during power outages. With its robust interconnectivity, tamper-resistant design, and code-compliant certification, the SMI105-AC is the ideal choice for modern residential safety.

Key Features

Advanced Smoke Protection: Equipped with dual ionization sensing technology for faster detection and fewer false alarms.
10-Year Battery Backup: Powered by 120V AC with a factory-locked 9V Lithium battery backup, eliminating the need for battery replacements for a decade.
Interconnect Capability: Connects with up to 18 compatible First Alert and BRK devices (maximum of 12 smoke alarms). When one unit triggers, all interconnected alarms sound.
Latching Alarm Indicator: Visually identifies the specific unit that initiated an alarm or has a low battery.
One-Touch Test/Silence Button: Easily test the unit or temporarily silence nuisance alarms with a single button.
Construction Dust Cover: Included to keep the internal sensors clean and debris-free during construction or renovations.
Gasketless Base & Locking Pins: Features a gasketless design for true alignment during installation, alongside tamper-resistant locking pins to secure the alarm to its mounting bracket.

Product Specifications

Attribute	Specification
Dimensions & Weight	5.58" Diameter x 1.99" Height
Operating Voltage	120V AC, 60Hz
Backup Battery	9V Lithium (10-Year, Factory-Locked)
Smoke Sensor Type	Dual Ionization Chamber
Audio Alarm Rating	85dB at 10 feet (Solid-state piezo horn)
Temperature Range	40°F (4.4°C) to 100°F (37.8°C)
Humidity Range	10% to 95% Relative Humidity (RH)
Alarm Reset	Automatic when smoke clears
Compliance & Listings	UL217, CSFM, NFPA 72, NFPA 101, ICC

Indicator Lights & Audio Signals

AC Power: Constant Green LED
DC Power (Battery): Flashes Green every minute
Smoke Alarm Trigger: 3 Beeps, Flashes Red
Latching Alarm: Flashes Red (2 seconds on / 2 seconds off after an alarm)
Low Battery: 5 "Chirps" every minute (Requires Alarm Replacement)
End of Life / Malfunction: 3 "Chirps" every minute (Requires Alarm Replacement)

Ideal Applications

Residential homes (bedrooms, hallways, and living spaces)
Multi-unit housing and apartment buildings
Interconnected, whole-home fire alarm networks
New construction projects and retrofit installations
Code-compliant residential fire detection systems

CLICK HERE FOR: SPECIFICATIONS

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Shipping

We offer FREE SHIPPING for orders with a minimum of $1000.00 in total amount to US destinations only except Hawaii and Alaska. This offer is subject to change without prior notice.

We can ship anywhere within United States and to some parts of the world. Note that there are restrictions on some products, and some products cannot be shipped to destinations outside California.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for the items we sell are weight-based. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Returns Policy

You may return most new, unopened items within 1 year of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

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