The Google Nest Protect Gen 2 Smoke & CO Alarm is a reliable and smart home-compatible device that offers peace of mind for you and your family. With its sleek design and easy installation, this alarm is equipped with features such as voice alerts and phone alerts to ensure you're always aware of any potential hazards. The device is backed by a 10-year manufacturer warranty, providing you with long-lasting protection. THIS DEVICE EXPIRES 2032. The Wi-Fi connectivity allows for easy monitoring and control, while the Google Home compatibility enhances the overall user experience. Expiry 2032. Mains wired 230v.