Pure sine wave output, MPPT solar charge controller built-in, supports lithium & lead-acid batteries, parallel operation , IP65 (outdoor model, Operating temperature: -10°C to 50°C, Humidity: 5%–95% non-condensing, Wall-mounted design; dimensions vary by kW rating DC Reverse Polarity Protection, AC Output Overcurrent Protection, Thermal Protection, AC Output Overvoltage Protection, AC Output Short Circuit Protection, DC Component Monitoring, Insulation Impedance Detection, Arc Fault Circuit Interrupter (optional),DC Switch, Anti-islanding Protection(Active Frequency shift) , Residual Current Detection