1. Maximum power point tracking (MPPT) with fast response speed and stable operation efficiency> 99% 2. Suits for most 3 phase AC pumps and AC PMSM high efficiency pumps 3. Compatible with AC grid and DC power supply input at same time 4. Built in automatic sleep-wake up function 5. Dry run (under load ) protection 6. Motor maximum current protection 7. Low input power protection  8. Lowest stop frequency protection 9. The PQ (power/flow) performance curve enables calculating the flow output from the pump 10. Digital control for fully automatic operation, data storage and protective functions 11. Low water probe sensor, and water level control function  12. Strong lightning protection 13. Ambient temperature for using: -10 to +50˚C 14. Clock relay card for timing stop and stop control  15. LCD keypad as optional 16. Input VOC auto-detect function