Do not buy a JFY inverter they fail - their warranty is worth nothing!
They are not helpful - being extremely difficult and want to charge me for a replacement main board plus $201US dollars postage from China to Australia when the inverter is under warranty. Consumer law in Australia requires they either repair or replace at their expense. Their own warranty documents says they will replace and send out within 2 days whereas is takes forever to even receive a response and their Aus support phone number is disconnected!
Stay clear of Shenzhen JingFuYuan Tech. Co., LTD.