(1) When pulling logs with a tractor, you may encounter some obstacles on the road (hill, roots etc.). If the tractor is not able to overcome these obstacles, the unwinding function can be switched into the mode without the assistance of the unwinding device and you can continue driving with a taught wire rope between the winch and the load. (2) The unwinding device can be turned on and off without delay (the standard model has a 1.5 sec. delay). (3) The SMART 3in1 function ensures additional tension of the wire rope between the unwinding pulley and drum.