TP-Link Deco BE85 BE22000 Tri-Band 10G / 2.5G Whole Home 3-Piece Mesh System - Manual (Page 73)

70 * Features available in Deco may vary by model and software version. Deco availability may also vary by region or ISP.
Configure Connection Alerts
You can configure Connection Alerts so you can get alerts when new devices connect to your network or when the devices you care about go online
or offline.
Go to More > Connection Alerts to enable notifications of new or known clients.