BestCH AC Adapter for Casio CTK-4000 CTK-558 CTK-700 Piano Keyboard Power Supply Cord Charger

Product Specifications: ? Plug Type: US prong ? Input Voltage:AC 100-240VAC Worldwide Use ? Input Frequency Range: 50-60Hz Kindly Note: ? This item is replacement power adapter ,not Orginal/Genuine. ? Please be kindly informed that the total wattage of the device should not exceed the max wattage (shown on the adapter's label) of this adaptor ? And we suggest it to be de-rated 10%-20% when using to prevent overheating Warnings: ? Don't open or modify the power supply / power cord/ power cable ? Please leave children, kids far away from high voltage power source ? Please use it under professional electrician's guides ? Any abuse or improper use will void warranty