... ,ac voltage stabilizer 2,small,light,high precision 3,wide regulation,reliable 4,low loss, anti-distortion 5, CE, ISO SVC fully automatic ... 160V--250V, 70--130VOutput voltage: 220+/-3% with 110V+/-3%Phase: single phaseFrequency 50Hz/60HzResponse time with 1 sec,against 10% input voltage ... 95%Waveform distortion Non-lack fidelity in waveform. SVC digital display fully automatica AC voltage stabilizer