An all-in-one Off-Grid Fusion inverter is one of the most complete Voltronic inverters available today . With updated monitoring that now allows you to access your data via the new Andriod app . The new detachable LCD module includes extra ports to upload or download your settings and data. With plenty of expansion room you can parallel up to 9 units , making this inverter versitile and affordable. Features Built-in Bluetooth for mobile monitoring Detachable LCD control module with multiple communications (Android App is available) Supports USB On-the-Go function Reserved communication port for BMS (RS485, CAN-BUS or RS232) Configurable AC/PV output usage timer and prioritization Parallel operation up to 9 units Robust UPS (uninterrupted power supply) for essential loads with zero transfer time