Not a valid serial message. Expecting: @TYPETAG,PAYLOAD~ or @TYPETAG~
Options available:
1. Add a wifi credential. Send: @WA,{"ssid":"SSSS","password" : "PPPP"}~
- Replace SSSS with network name and PPPP with network password
2. List wifi credentials. Send: @LS~
3. Delete Wifi Credential. Send: @WD,<credential number>~
- use List option to get a wifi list. Then use the number in the list to delete that credential
4. Reset device. Send @RS~
- Restart the device after editing config file
Describe the feature e.g.