1, Real sine wave output; 2, Strong capability for different 3, RS232 4,Advanced PWM technology for inverter output Features:* Advanced PWM technology for inverter output.* AVR function.* Perfect automatic protection against extremely high orlow voltages, overload, over-current, short circuit, or low battery.* RJ-45/11 for telephone, fax and modem circuitprotection(only for medel"B").* Smart ...