HP-3 POWER SUPPLY For Tattoo Machine 
Input voltage:110V-240V AC50/60Hz.. Output Voltage:1~20v(adjustment) DC 15V 1.5A. Rating Current 0A-1.5A. Operating Temperature : -20 ~ +45. Storage Temperature -20 ~ +85. Relative humidity 5%~95%. Waves ises <100mV. Shell: top steel.. Output power: 28W.. Overload Voltage Protecttion: 120%min.. Overload Current Protection: 120%min.. Output Voltage Accuracy 5%.