BRK Hardwired Ionization Combination Smoke & Carbon Monoxide Alarm advanced protection for your home by combining smoke and carbon monoxide detection in one reliable device. Featuring Precision Detection technology, it effectively reduces nuisance alarms caused by cooking while providing early warnings to keep your household safe. This hardwired alarm includes a battery backup to ensure continuous operation during power outages and can interconnect with most First Alert and BRK alarms, allowing all compatible units to sound simultaneously in an emergency. Its secure mount bracket makes installation straightforward, and the latching alarm indicator along with the test/silence button enhances ease of use and functionality. Model Number: 1046870