Do not purchase from EASUN or POWLAND
This company will take your money and you will receive a device. However, it will fail and you will end up chasing their support which will not help you at all. In my case I purchase two 10kW iGridTT devices and both arrived with damage. I was told to try them rather than return them and wouldn't you know - both of them failed. The first one had an internal problem where I was told to self-install a new board. However, they sent me a board that did not belong to the inverter. After a lengthly complaint process I convinced them to send me another board only to receive a similar board that did not fit the device. Since then it has been radio silence from the firm. The second one also failed under a year after install. I would strongly suggest that you do not purchase from this firm and look for alternatives.