The Aico Ei650i Optical Smoke Alarm is a high-quality home security device that combines battery and hardwired power sources for added reliability. With a sleek white design and a compact item depth of 5 cm, this smoke alarm by Aico is perfect for any home. It boasts a 90 dB operating sound rating and features a battery backup for continuous protection even during power outages. Manufactured in 2023, this unit includes one battery and weighs 185g, making it a reliable and essential addition to any home's fire safety system.