eero Secure is designed to protect all the devices on your network—not just those that have a user interface or the ability to install software. With eero Secure, you can know that all your devices are protected from external threats.
At this time, eero Secure doesn't cover devices that are on the guest network.
If you have any other questions, feel free to give us a call at 1-877-659-2347 or email us at support@eero.com.