Specification Screen: 2.8 inches TFT Touch Screen Min. Current Adjustment: 0.1V Output Voltage Range: 0-16 V 40W Max. Current: 2.5 A Input Voltage: AC100V-240V/50HZ/60HZ All Features ① LED color varies by voltage range ② Dot-box function(Coil Machine Only) ③ Preset voltage ④ Timing function ⑤ Magnetic anti-slip base ⑥ Current display ⑦ Dual outputs ⑧ Dual foot pedal modes -Continuous mode & Manual mode ⑨ No foot pedal request (Continuous mode only) Instructions： ①A,B output ports connect to tattoo machines, The footswitch port ②The right side arrow adjust the voltage. Short Press up arrow or down arrow once to increases or decreases 0.1V. Long press the voltage up arrow or down arrow to continuously increases or decreases the voltage. ③The left side arrows adjust the Dot- Box speed. Short Press up arrow or down arrow once increases or decreases the Dot -Box speed by 1.Long press the up arrow or down arrow can continuously increase or decrease the Dot Box speed.The Dot Box speed is 1 to 60 (for coil tattoo machine) Press the Dot-Box speed to tuirn on/off the Dot- Box function. When the Dot-Box speed shows blue, Dot-Box function is on. Package include： 1pc* Power supply 1pc*Power adapter 1pc*Power cable 1pc*instructions