... /SPWM,small volume,lower noise,high reliability*double isolation of the input and output ,safe and reliable*output the pure sine wave,low ... :≤2%Input voltage:220V±20%Output voltage:115V±20%Reactime:≤2msDigital meter indication:Frequency,voltage,current,power and power factor meterWorking temperarure:-28 ... system:Forced fan cooling 3KVA 400HZ frequency and voltage regulator high voltage power supply