Descriptions Instructions for use: ULT low for the sleep mode (J2 need to disconnect the module behind the short solder joints) OUT1, OUT2 is 1 way H bridge, corresponding control is IN1, IN2. OUT3, OUT4 is the second road H bridge, the corresponding control is IN3, IN4. EEP to protect the output, the default does not. VCC for the voltage input 3 to 10V. GND to GND.