Brk 9120b Manual. Below the digital display on the left. Button underneath First Alert logo.
BRK Electronics First Alert 4120B 120V ACDC Hardwired with 9V Battery Backup Ionization Smoke Alarm Upgraded to 9120B When ordering this we will upgrade to a current model a plug-n-play unit. What are the shipping options for BRK Smoke Detectors. The First Alert 9120B Hardwired Smoke Alarm with Battery Backup comes equipped with an ultra-reliable ionization sensor to provide the earliest possible warning of a fast-flaming fire.
PRC710V PC1210V.
All BRK Smoke Detectors can be shipped to you at home. BRK Electronics First Alert 4120B 120V ACDC Hardwired with 9V Battery Backup Ionization Smoke Alarm Upgraded to 9120B When ordering this we will upgrade to a current model a plug-n-play unit. While it is expensive it is the only smoke detector on the market to offer this feature. Ionization sensor which helps detect fast flaming fires that consume combustible materials rapidly.
