1. CPU control. Pure sine wave output.
2. Four-steps AVR.
3. Charging current 20A.
4. Transfer time no more than 4ms.
5. Protection against short-circuit. Special overload protection, when it is overload, it will lock the unit automatically, when it restores, it will start the unit automatically again.

6. When the mains come, it will start the unit automatically
7. Function that it will change its frequency instantly, it is able to drive inductive loads, such as air- conditioner, refrigerator, motor, and so on.
8. With RS232, it can realize software control function
9. From 300W to 20KW.