EP1800 Series (1-5KW) This is a multi-function inverter, combining function of battery charger to offer uninterruptible power support with portable size. Its comprehensive LCD display offers user-configurable and easy-accessible button operation such as battery charging current, acceptable input voltage based on differentapplications. Features: Pure sine wave output Smart LCD setting ( Working modes, Charge Current, Charge Voltage, etc.) Combining solar system, AC utility, and battery power source to supply continuous power Multiple operations: basic Grid-tie, ( for 4KVA/5KVA model) Off-Grid, Grid-Interactive Parallel operation with up to 3 units (Available for 4KVA/5KVA only) Overload, Short circuit and Deep discharge protection Cold start function Support USB, RS485 monitoring function with free CD WIFI remote monitoring (optional) Compatible to generator