Add-on for the Eero system! Never opened. Vacuum sealed. Bought too many for my home in June 2021. Box has all product details! From website: eero home WiFi extender - Add Amazon eero Beacons to any existing eero network to instantly increase WiFi coverage throughout any home. Just plug eero Beacon into any wall outlet and follow the steps on the eero app. eero Beacon wall plug-in - Designed to expand your existing eero mesh WiFi system, eero Beacons simply plug into any outlet. Perfect for kitchens, hallways, and bedrooms. With a built-in nightlight, eero Beacons automatically adjust to the brightness of any room to provide just a touch of light. Cutting edge WiFi - Unlike common wireless routers and access points, eero automatically updates overnight so you always have the latest security and features. Mesh network - Powered by proprietary TrueMesh technology, eero WiFi systems leverage multiple access points to create a mesh network to provide your home with incredibly reliable internet, all on a single system. Requires an eero network - eero Beacon requires an existing eero network. You can add as many eero Beacons as you need to maximize coverage throughout your home. Connectivity Technology - WiFi Built In; WiFi Ready