The VE.A direct port on this inverter can be connected to a computer via a (optional) VE.Direct to USB interface cable, or a smartphone (Apple and Android), tablet, MacBook, and other devices via a (optional) VE.Direct Bluetooth Smart Dongle. This allows you to monitor In- and output voltage and current alarms. You can also configure low voltage alarm trip and reset levels, low voltage cut-off and restart levels, output voltage 210-245V, frequency 50Hz or 60Hz, ECO mode on/off, and ECO mode sense level.