... transformers is as below: Type standard Input voltage Output voltageFrequencyTC-100W220V<----------->110V50Hz-60HzTC-200WTC-300WTC-500WTC ... :Efficacy: fast starting, quick response, fully protection, high precision output voltageApplication: Computers, Duplication, ILLumination system, ... have 20 years experience of transformer stand for quality, durability, originality. Good After Sales Service: Any ...