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First Alert 9120LB AC/DC Hardwired Lithium Battery Backup Ionization Smoke Alarm

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MSRP: $25.99
Price: $18.56
Item Number: 9120LB
Manufacturer: BRK/Firex/Kidde
Minimum Order - 84 units.

BRK/First Alert Model 9120LB is a state of the art smoke alarm designed to install faster, perform better and be even smarter than before. The 9120LB is a 120V hardwire unit with lithium battery backup.

It features an ionization smoke sensing chamber which may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. The First Alert 9120LB also features an 85dB horn, a single button test/silence switch, a silence feature to silence unwanted nuisance alarms. Other unique features of the SA340B smoke alarm are:

  • Factory Pre-installed Battery: The Lithium batteries are factory pre-installed and activated using a pull-tab. Equipped with a tamper resistant locking feature, provided to prevent battery removal after activation.
  • It also features tamper resistant locking pins that lock the alarm to the mounting bracket.
  • The 9120LB is AC/DC and interconnectable with up to 18 devices, 12 of which can be smoke alarms.

The alarm is designed to have an 'End of Service Life Alert', an audible signal when the battery has reached the end of its service life.

Designed for wall or ceiling mounting. Includes mounting anchors and screws.



  • Model 9120LB
  • Hardwire with Lithium Battery Backup
  • Ionization Sensor
  • Battery Compartment Equipped with a Tamper-Resistant Locking Feature
  • Single Button Test/Silence Switch
  • Tamper Resistant Mounting Plate with Locking Pin
  • UL 217 Listed and Compliant with CSFM, NFPA 72, and NFPA 101
  • Ten Year Limited Factory Warranty