HQRP AC Adapter & Sustain Pedal for Casio CTK-541 CTK-551 CTK-574 CTK-601 CTK-611 CTK-620L LK-300TV LK-90TV LK-94TV CTK-491 CTK-496 CTK-571 CTK-573 CTK-591 CTK-593 CTK-671 CTK-691 Keyboards HQRP&reg; AC Adapter plus HQRP&reg; Sustain Pedal Piano Style; Input: AC 100V - 240V; Output: 9V; 850mA; UL Listed; Safety Features: High Efficiency and Reliability; Automatic Overload cut-off; Automatic Thermal cut-off; Short circuit and Over Voltage protection; Low Interference & Noise. Connector: 1/4 inch; The pedal is made in piano-style. Has a specially designed lower rubber part allowing the pedal to stay in place while you play. For all electronic keyboards, synthesizers, tone modules or drum machines with 1/4" phone jack sustain-pedal input. 200 days warranty!