The AD-A12150 is a 12 volt adapter designed to work with your Casio keyboard eliminating the need for batteries

Works with the following models:

AP-220, AP-250

CDP-120, CDP-220

CTK-6000, CTK-6200, CTK-7000, CTK-7200

PX-3, PX-3S, PX-5S, PX-130, PX-135, PX-150, PX-330, PX-350, PX-730, PX-750, PX-780

WK-6500, WK-6600, WK-7500, WK-7600