The gateway is used with AIOs only. You could use the EPS output from your inverter. You may need to get it enabled on the inverter and it will be limited to the output of your battery. See this thread for details EPS Wiring Query
The gateway is used with AIOs only. You could use the EPS output from your inverter. You may need to get it enabled on the inverter and it will be limited to the output of your battery. See this thread for details EPS Wiring Query