Features: Internal CPU control Advanced PWM technology for inverter output Low current switch control technology to extend the life of the switch Inner equipped charger of constant current and voltage, advanced battery management, and low voltage protection system Supports AVR function Inner installed examination circuit for too low or too high voltage Commercial power can connect with the power generator Thermal battery change technology, convenient for the users to change battery Special protection against AC/DC overload and short-circuit protection against inversion state with high reliability Short-circuit protection Over-charge and discharge protections With LED display Communication interface USB Input voltage: 85 to 135 or 165 to 275V AC Output voltage: 110 or 220V AC