Power: 500VA Technology: Classic series, EI transformer, Relay type Input Voltage:140Vac~260Vac Input Frequency: 50/60Hz Output Voltage: 220Vac Output Accuracy: ?% Efficiency: 98% Phase: single phase Display: input and output voltage meter display Protection: High voltage protection Low voltage protection High temperature protection Circuit protection: circuit breaker Smart Cooling System: Yes Compliant Standards: CE, EN60950, EN55024 Operating Relative Humidity: 10%RH~102%RH, Non-condensing Machine Size(mm): 352*220*256 N.W.(Kgs): 15.5