1. AVR Voltage Regulator 2. 500VA,1000VA,1500VA 3. 100V~270V or 160V~250V ... time:3-7sec/3-7min SVR-1000VA AVR Relay type Voltage Regulator suitable for computer,lighting equipments,TV,medical,communication system,fridge ... .8Acoustic EnvironmentalNoise levelTemperature≤50dB-5-60 Degree CHumidity20% to 90% Power Voltage Regulator AVR