Product parameters: Size: 33.4 * 25.6MM Voltage: 3.3V,5V Port: the digital quantity level The output load voltage: 0 to 24V The output load current: < 5A (more than 1A need to add heat sink) Platform: the Arduino,MCU,ARM,raspberry pie The product features: Using original IRF520 power MOS tube,can adjust PWM output Can let the Arduino drive up to 24 v load,such as LED lights belt,dc motor,micro pump,solenoid valve By PWM adjustable can realize stepless dimming LED,motor stepless speed regulation The product instructions: PWM signal for high level effectively When the PWM for high level (3.3 V to 3.3 V) : As the power supply voltage,between V + and V - working indicator,work load When the PWM is low level (0 V to 0.5 V) : V + and V - between 0,work lights out,don't work load