Thank you @Dimumal !!! I was finally able to get this to work with PowMR POW-SunSmart SP5K.
To those that are having issues… MAKE SURE you follow the wiring diagram! Initially I didn’t bother wiring the ground wire between inverter to the TTL-RS 485 board and it didn’t work. Took everything apart and redid it all over and finally worked. Also takes about 5-10 mins before I see any data fed into HA so be patient.
