The First Alert 9120B Smoke Detector is a reliable and affordable device that provides excellent protection against smoke and fire hazards in your home or business. This device is easy to install, and once in place, it provides continuous monitoring to ensure that you and your loved ones are safe from fire dangers. This smoke detector is equipped with a photoelectric sensor, which is designed to detect slow, smoldering fires that may be missed by other detectors. This makes it an excellent choice for kitchens, bedrooms, and other areas where fires may start slowly. The device comes with a simple mounting bracket and requires no wiring, making it easy to install in any location. Additionally, the device features a low battery alert, which ensures that you are always aware of the status of your smoke detector and can replace the battery before it runs out.

Overall, the First Alert 9120B Smoke Detector is an excellent choice for anyone looking for a reliable and affordable smoke detector. With advanced smoke sensing technology, easy installation, and low battery alerts, this device provides excellent protection against fire hazards in your home or business.