Accu Control has the function of a fire detector for battery-operated devices. it warns against overheating, starting at 45 ° Celsius and it makes its presence felt by a sharp acoustic signal. Once you hear this sound, you can respond by stopping the upload. Accu Control is easy to use: remove the plastic tape to close the circuit, remove the adhesive foil and attach it to the battery. This small device ensures great safety and can even save lives!