First Alert Smoke Detector Alarm | Hardwired with Backup Battery, 6-Pack, BRK9120b

Which are the best smoke alarms battery operated 6 pack available in 2024?

Feature

6 Pack for Contractors. Emits T3 Pattern
Ionization Smoke Sensing Technology. Loud 85dB alarm
Latching Alarm Indication and Dust Cover. Tamper resistant locking pins
Easy to Install Side Battery Drawer with Universal Mounting Bracket
Tested to the highest industry standards, meets UL safety standards

Description

Smoke alarm with test/silence button and insect screened, dual ionization sensing chamber. Input: 120 volt AC - 60 Hz, green LED power-on indicator, red LED to confirm unit is working properly, single test/silence button to check all alarm functions. Solid state piezo horn rated at 85 dB minimum at 10 feet, plug in connector capable of interconnection of up to 18 alarms, 12 of which can be smoke alarms. Meets the requirements of UL 217, CSFM, NFPA, NFPA 101, ICBO, BOCA, SBCCI and CABO. 10 year limited warranty.