Power Transformer with Silicone Laminated Steel Special Features: Input voltage: 100, 120, 220, 230, 240V (+/- 10%) Frequency: 50/60Hz Output power: 0.5 to 40VA Insulation grade: Class A, Class B, Class F and Class H Characteristics: Used for indoor Low ripple noise Green energy-saving chip design Double insulated Built-in thermal fuse with short circuit, overload, overheating and over voltage protections.