9120BA - Genuine OEM BRK 120V Hardwire Ionization Smoke Alarm, Battery Backup

9120BA - Genuine OEM BRK 120V Hardwire Ionization Smoke Alarm with Battery Backup

The 9120BA Genuine OEM BRK 120V Hardwired Ionization Smoke Alarm with Battery Backup is a genuine BRK smoke alarm designed for residential and institutional applications. It operates from a 120V AC hardwired electrical connection and includes a replaceable 9V battery backup to help maintain alarm operation during a power outage.

The 9120BA uses dual ionization sensing technology designed to provide reliable detection of smoke particles associated with fast-flaming fires. It also features a latching alarm indicator, silence function, test button, and hardwired interconnect capability.

Appliance Kingdom supplies genuine OEM and quality replacement parts to customers across Canada, making the 9120BA a suitable choice for homeowners, landlords, property managers, and professional technicians replacing a compatible BRK smoke alarm.

What Does the BRK 9120BA Smoke Alarm Do?

The 9120BA is designed to detect smoke and provide an audible warning when smoke reaches its ionization sensing chamber. Ionization technology is generally more sensitive to the smaller smoke particles commonly produced by fast-flaming fires.

The alarm operates from a 120V AC hardwired power supply while a replaceable 9V battery provides backup power if the primary electrical supply is interrupted. The unit produces an 85 dB alarm at 10 feet and includes a visual LED indicator for operating and alarm status.

Correct voltage, wiring, sensing technology, and installation are important for reliable smoke detection. The 9120BA is listed to the Canadian ULC S531 standard and is intended for appropriate residential and institutional applications.

Common Signs Your Smoke Alarm May Need Replacement

A smoke alarm may require replacement when it exhibits problems such as:

• Repeated nuisance alarms when no smoke or fire condition is present

• Failure to sound during a proper test

• Persistent chirping or warning signals

• Failure to operate correctly from the hardwired power supply

• Battery-backup problems after installing a suitable battery

• Physical damage to the alarm or housing

• End-of-life or other manufacturer-indicated replacement condition

Before replacing the complete alarm, check the battery, power supply, wiring, and installation conditions according to the manufacturer's instructions.

Will Replacing the 9120BA Fix My Smoke Alarm Problem?

If the existing 9120BA is defective or has reached the end of its service life, replacing it with the correct compatible smoke alarm can restore the intended detection and alarm functions.

However, a smoke alarm that is not operating correctly can also be affected by electrical supply, wiring, battery condition, environmental conditions, contamination, or installation issues. The manufacturer's troubleshooting and installation instructions should be followed before replacing the unit.

For a safety-critical device such as a smoke alarm, do not rely solely on replacing the alarm to resolve an unexplained electrical or installation problem.

Compatibility & Ordering Guidance

The 9120BA is a BRK 120V AC hardwired ionization smoke alarm intended for compatible residential and institutional installations. BRK identifies applications including homes and multi-family, hotel, motel, dormitory, and hospital sleeping-room environments.

Before ordering, verify:

• Existing alarm model number

• Required operating voltage

• Hardwired versus battery-only installation

• Interconnect requirements

• Local electrical and fire-safety requirements

• Manufacturer-approved replacement requirements

If you are replacing an existing alarm, provide the complete model number to Appliance Kingdom so compatibility can be checked before purchase.

Key Features & Benefits

• Genuine OEM BRK 9120BA smoke alarm

• 120V AC, 60 Hz hardwired operation

• Dual ionization smoke sensing chamber

• Replaceable 9V battery backup

• 85 dB alarm at 10 feet

• Test and silence functionality

• Latching alarm indicator

• Hardwired interconnect capability

• Quick-connect plug included

• Two locking features for the alarm and battery drawer

• 10-year limited manufacturer warranty

• Listed to ULC S531 for applicable Canadian installations

The 9120BA can interconnect with compatible First Alert or BRK hardwired alarms. BRK specifies up to 18 interconnected units, with a maximum of 12 smoke alarms, subject to the manufacturer's requirements.

Installation Overview

The 9120BA is a hardwired electrical smoke alarm, so installation requires connection to a 120V AC electrical supply. It is not simply a battery-operated replacement.

The unit includes a mounting bracket and hardwire quick-connect plug. The manufacturer's documentation identifies hot, neutral, and interconnect wiring connections for applicable installations.

An experienced and appropriately qualified installer may be able to install the unit, but electrical work should be performed by a qualified professional where required by local regulations. Always disconnect power and follow the manufacturer's installation instructions and applicable Canadian electrical and fire-safety codes.

Canada-Wide Availability & Appliance Kingdom Support

Appliance Kingdom is a Canadian appliance and replacement-parts supplier based in Edmonton, Alberta, serving customers across Canada.

The BRK 9120BA is specifically documented for Canadian applications and is listed to ULC S531. BRK also identifies the 9120BA as available in Canada.

Appliance Kingdom serves homeowners, landlords, property managers, maintenance teams, and professional technicians looking for genuine OEM replacement components.

Buyer Confidence

The 9120BA is a genuine BRK model documented by the manufacturer with specifications for 120V AC hardwired operation, dual ionization sensing, 9V battery backup, interconnection, and Canadian ULC certification.

For safety-critical equipment, always confirm that the replacement alarm matches the existing installation requirements and applicable local codes before ordering or installing.