The module is based on FET model F5305S. We can input PWM signal to control motor speed, lightness of bulb, etc. Features: FET module, input and output totally isolated from each other. Signal trigger: digital high/low signal, can be connected to IO of micro-controller, PLC interface, DC power supply, etc. The output can control high-power devices: motor, light bulb, LED light & strips, DC motor, small pumps, solenoid valve. Input signal voltage: 3V~20V; Input current: about 5mA. Output voltage: 5V~36V(Current: within 5A, Max. current is 20A. When current is over 5A, please add heat sink).