Default ip address is:- http://192.168.4.1, this is offered via the AP built into the device for initial config.
log in to Web Console
IPAddress1 192.168.21.x
or use the command on Web line, e.g.
http://sonoff/cm?cmnd=IPAddress1%20192.168.1.2
see Wiki Commands for WiFi (https://github.com/arendst/Sonoff-Tasmota/wiki/Commands#wifi)
Change ip to 192.168.21.211 type in console: ipaddress1 192.168.21.211 ipaddress2 192.168.21.1 ipaddress3 255.255.255.0
Set back to DHCP:-
ipaddress1 0.0.0.0
restart 1
NS Panel link:- https://blakadder.com/nspanel-hacking/
https://blakadder.com/nspanel-pro-secrets/
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