Features:- The TL-Smoother V1.2 is an addon module for 3D printer stepper motor drivers.- The module adopts the patch diode with strong consistency, the signal is more stable and the service life is longer.- The board provides flyback diodes (freewheeling diodes) for the motor outputs, so that they are also protected against induction voltages in the unpowered state of the driver.- Lower vbration lower noise smoother result Package Included:1x TL-Smoother Module1x Cable