Input voltage range: 175V (AC) to 250V (AC)
Input frequency range: 47Hz to 53 Hz
Input AC stabilization range: 185V (AC) to 240V (AC) 50Hz
Output voltage for stabilization range: 220V ±10%
Reversed input voltage: lower limitation is 180V (AC) and higher. Limitation is 245V (AC)
Output reversed AC voltage: 220V (AC), 50 Hz (will base on THE TRUE RMS value)