The First Alert Smoke Alarm Model SA67C operates with ionization technology, providing early detection of smoke to ensure the safety of your home. With a power source of battery-operated functionality, this smoke alarm is reliable and convenient for installation in any room. The sleek white color and model (First Alert 9120B) make it a stylish and effective addition to your home security system, giving you peace of mind knowing you and your loved ones are protected from potential fires.