Which SSID I should use on Extended WiFi

Hi @MM6. The Ring Video Doorbell 3+ is capable of connecting to both 2.4Ghz and 5Ghz. I would first connect to the 2.4Ghz network and then check your RSSI of the Doorbell in the Ring app, under the Device Health tile. You can then connect to your 5Ghz and check to see if the RSSI has improved or not. You can stay connected to the network that will give you the best RSSI. I hope this helps!