... current, you should first choose the level you want by button"≤""≥" and then make addition and substraction operation on it by ... button "ACC" and "DEC".After the regualtion,put the button ‘EN' precast mA value will be ... ,"16"stand for 16mA,"20"stand for 20mA.If you press button"8"8.000 will be displayed in LCD,it means ...