FITE ON UL LISTED AC DC Adapter Charger Compatible With Yamaha Ydp-131 Ydp-213 Keyboard Power Supply PSU This adapter from FITE ON is approved for Sale in the US and Canada by Underwriters Laboratories (UL) and Got the certificates. with short circuit protection over-current protection over-voltage protection overload protection over temperature protection. The most important is it will neither do harm to your family nor your device! ☛AC Adapter Specifications: * Input Voltage: 100-240 50-60 Hz *DC Line Length: 5ft/1.137m ☛Warm Tip: Keep the adapter dry do not store or use adapter in hot and cold environment. If you use the charger for a long time please keep it suitable ventilating and humidity