Device for registering an On state (On) of a drive motor of a tool , wherein the device is designed for arrangement on the tool , wherein a changing magnetic flux (B) is produced in the On state (On) of the drive motor , wherein the device has: - an inductive sensor , wherein the inductive sensor is designed so that a voltage signal (IS) is induced in the inductive sensor on the basis of the changing magnetic flux (B), - a capacitor , wherein the capacitor is electrically connected to the inductive sensor , - an amplifier , wherein the amplifier is designed to amplify the induced voltage signal (IS) or a signal based on the voltage signal to produce an output voltage signal (AS), - a first peak hold detector and a second peak hold detector , wherein the first peak hold detector is designed to generate an upper peak signal (OP) from the output voltage signal (AS) or a signal based on the output voltage signal, and wherein the second peak hold detector is designed to generate a lower peak signal (UP) from the output voltage signal (AS) or the signal based on the output voltage signal, - an evaluation device , wherein the evaluation device is designed to form a difference (DI) from the generated upper peak signal (OP) and the generated lower peak signal (UP), to compare the formed difference (DI) or a quantity based on the formed difference with an adjustable threshold value (ES), wherein the threshold value (ES) is software-based, and to determine the On state (On) of the drive motor when the threshold value (ES) is reached or exceeded, and - a communication interface , wherein the communication interface is designed to send the determined On state and/or operating data (BD) based on the On state (On) wirelessly to a terminal , and wherein the communication interface is designed to receive a setting for the threshold value (ES) wirelessly. - an inductive sensor , wherein the inductive sensor is designed so that a voltage signal (IS) is induced in the inductive sensor on the basis of the changing magnetic flux (B), - a capacitor , wherein the capacitor is electrically connected to the inductive sensor , - an amplifier , wherein the amplifier is designed to amplify the induced voltage signal (IS) or a signal based on the voltage signal to produce an output voltage signal (AS), - a first peak hold detector and a second peak hold detector , wherein the first peak hold detector is designed to generate an upper peak signal (OP) from the output voltage signal (AS) or a signal based on the output voltage signal, and wherein the second peak hold detector is designed to generate a lower peak signal (UP) from the output voltage signal (AS) or the signal based on the output voltage signal, - an evaluation device , wherein the evaluation device is designed to form a difference (DI) from the generated upper peak signal (OP) and the generated lower peak signal (UP), to compare the formed difference (DI) or a quantity based on the formed difference with an adjustable threshold value (ES), wherein the threshold value (ES) is software-based, and to determine the On state (On) of the drive motor when the threshold value (ES) is reached or exceeded, and - a communication interface , wherein the communication interface is designed to send the determined On state and/or operating data (BD) based on the On state (On) wirelessly to a terminal , and wherein the communication interface is designed to receive a setting for the threshold value (ES) wirelessly. <EOS>