Features: Cutting-Edge Grid-Tie: 10000W Nominal Output High 550 VDC Input (20000W Max PV!) 4 MPP Trackers, 2 Strings Per MPP Tracker Up to 98.5% Efficiency Quality Design: –13°F to 140°F Operating Tempurature Natural Convection Cooling NEMA4X (IP65) Rated ‘Aerospace grade’ Flame-retardant Lightweight Materials Communication: Built-in 4G/Wi-Fi Communication with APP, IoT integrated Cloud and monitoring IOS, Android & Windows Apps Advanced Protection & Safety: UL Certified (1741) Type III AC Surge Protection AC Short Circuit Protection Ground fault & Grid Monitoring AFCI Protection Rapid Shutdown Capable, RFCI Protection Anti-islanding Protection Residual-Current Monitoring