Features:

  STO series step-up & down transformer is an AC voltage converting device.It is made of the wind with the annular iron core.thus make the product have low power consumption and high efficiency.Using it.to convert the multi-kind net .voltage into a general output voltage under which all the electronic units are safe for use within the rated power range.

       Input voltage: AC110V or 220V

        With fuse protector or with over current protector