Input :120Vac / 220Vac, 50 / 60Hz. Output Power: 600W,900W ,1000,1200W,1500W,1800W . Type PowerW Frequency (KHz)CCWY300W30028--40CCWY600W60028--40CCWY900W90028-- ... KHz, etc 5%Time control: 059 minutes 59 secondsRange of power control: 0-100% digital control and adjustment of 32 gradesInternal ... : L x W x H = 160*300*360 the specifical power source for ultrasonic cleaners