1.Current sense ports 2.4 pull up ... the temperature and achieve more stable capacity.-2 current sense ports-Inner logic power supply selection switch-4 ... motor driver2. Driver power supply: +5V~+46V3. Driver current Io (max): 2A4. Logic power supply output Vss: ... Dimension: 60mm*54mm11. Driver weight:~48g12. Other extensions: current sense ports, controlling direction indicator, pull-up resistor switch, ...