1Ensure peace of mind with the Google Nest Protect Smoke and Carbon Monoxide Detector, a smart addition to your home safety regimen. This detector is designed to keep you informed and in control with features like battery backup, electrochemical carbon monoxide sensor, and integration with the Nest smart home system. With the Nest Protect, you can receive phone alerts and manage your alarm system remotely, enhancing your home's security. The unit is presented in a sleek white finish and is compatible with Wi-Fi, allowing for easy setup and connectivity. It comes with three batteries to get you started and offers the assurance of a hardwired power source for continuous operation. The model, manufactured in 2019, is a testament to Google Nest's commitment to innovation and safety.