The Nest Protect Smoke and Carbon Monoxide Detector Alarm in White is a top-of-the-line home security device from Google Nest. It operates on a battery power source, with 3 batteries included for convenience. The alarm is designed to detect both smoke and carbon monoxide, providing peace of mind for homeowners. With its smart home compatibility with Nest, users can easily integrate this detector into their smart home system for added convenience and security. Its sleek white design complements any home décor, making it a practical and stylish addition to any household.