First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector

plastic
Imported
Superior carbon monoxide sensor and dual ionization smoke alarm
Inter-connectable with BRK and First Alert hardwired smoke and carbon monoxide alarms
Easy to install universal mount bracket
Simple to use silence/test button; separate smoke and CO latching alarm indicators
9-volt battery included; 10-year limited warranty
Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety