Unlike the traditional Step Up and Step Down Voltage Converter, the AT series can automatically detect the input voltage, so manual selection is no needed any more. It has dual output (110V & 220V) at the same time, what you need to do is just to connect the load into the correct outlet, according to its input voltage range.

Special Features:
Always dual output 110V and 200V at the same time.
C. R. G. O. Transformer, less magnetic leakage, low noise and quiet operation.
Automatic selection of input voltage, manual selection is NO NEED.
Full Protection: Low Voltage, High Voltage, Short Circuit, High Temperature.
CE approval