- Long Battery Life: The battery backup ensures that the smoke detector will continue to function even during power outages, and the battery has a long life, so you won't have to replace it frequently.
- Cost-Effective: The 12-pack of First Alert 9120B Smoke Detectors is a cost-effective solution for those who need to install multiple smoke detectors in their home or business. With this pack, you can ensure that every room is protected without breaking the bank.

The First Alert 9120B Smoke Detector is a hardwired alarm system that comes in a convenient 12-pack. It is designed to detect smoke and fire quickly, ensuring that you and your family are alerted in case of an emergency. The device is equipped with a battery backup, ensuring that it will continue to work even during power outages. The 9120B is easy to install and comes with a universal mounting bracket, making it a perfect choice for any home or business. This smoke detector is also designed to be low-maintenance, with a long-lasting battery life and easy-to-replace batteries. With its reliable performance and convenient 12-pack, the First Alert 9120B Smoke Detector is an excellent choice for anyone looking to improve their home or business's fire safety.

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