The Kidde KN-COB-DP2 Carbon Monoxide Alarm is a reliable and essential safety equipment for any home. This AC powered plug-in alarm also includes a battery backup feature, ensuring continuous protection even during power outages. With a sleek white design and easy installation process, this alarm provides peace of mind for families in knowing they are protected from dangerous carbon monoxide leaks. The model 3153 features two batteries included, making it a convenient and practical choice for home security.