Auto sleep function: the soldering iron will be sleep mode when in idle (idle time could be set within 1-30 mins)
Shut off automatically: the soldering iron shuts off automatically, you can press the knob to restart the soldering iron
Preset temperature function: you can set a frequently used temperature and time, so when in working mode, just press the knob then it will heat up to this preset temperature quickly
Great tool for television, audio equipment ,computer, interphone, remote control and other many filed