UpBright&reg; AC Power Adapter For CASIO CT-320 CZ1000 CZ230S HT3000 HTX10 CSM1 AZ-1 Keyboard World Wide Input Voltage 100-240VAC 50/60Hz OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection) Tested Units. In Great Working Condition UpBright 30 days money back guarantee. 1 full year service warranty