As one of the hybrid inverter top suppliers in China, oulu produces 3kw 3.5kw 5kw 24v 48v off grid inverters and 3kw 3.5kw 5kw 48v on off grid hybrid inverters. The VMII series off grid inverters and GII series on/off grid hybrid inverters single phase have built-in MPPT charge controller all in one, wide input voltage. The GII series Hybrid inverters are able to work from Main grid utility, Solar and diesel generator. Parallel connection is also supported. If you need the inverter with WIFI, it is also available.