1.  If the conductive area of the belt(the grey area on the back of the belt) does not touch the skin, the intensity can only be set up to “1”. An alarm will sound after 2 seconds and the unit will automatically switch off. If the belt is removed during use, the intensity is automatically reset to “1”, if the belt is not immediately placed back into contact with the skin, the unit will automatically turn off after 20 seconds.
2. Auto off: after aproximately 10 minutes, the Auto off function will turn off the unit, if it is not in use.
   2, Failsafe: the unit will not work if you are not wearing it, if there is not enough conducing gel present or no load is connected;
3.  Alarm: in case of failsafe, the unit will sound a beeping alarm;
4.  Keylock toggle on/off: press and hold the function key for 3 seconds;