Our customer like this all in one solar generator, good outlook, easy wiring and operation.Because the inverter+ controller+ batteries all is built in one solar generator, the solar PV just need to connect with an PV combiner box, then connect to the solar generator is OK. Very suitable use for the house. Thanks for the introduction of such high-quality products. And thanks Alvin's good service, very professional. She help me calculate and matched the system. If you want to matched system, find this girl, very professional.