I would like to power my RAK7249 from 12v rather than PoE 48v.
By checking the board and user manual, I notice there is an undocumented socket as below.
Can I ask:
- Can I connect my 12v DC mains to this socket and power the RAK7249?
- Can I keep the backup battery connected and
- If my mains 12v failed, does the board switch to battery automatically?