Vifly ShortSaver V2 is an intelligent smoke stopper. The function of the smokestopper is that in the event of a short circuit (or high current consumption), it interrupts the voltage supply and thus protects the electronics. It is thus mainly used when testing components or when connecting the battery to a newly built copter for the first time. If you have made a mistake during soldering and there is a short circuit in the electronics, the ShortSaver will disconnect the power and ideally prevent the component from burning. Compared to simple smoke stoppers (which can be, for example, a car light bulb), the ShortSaver does not limit the maximum current, but completely shuts down the input voltage.