feature: Can directly drive loads such as LEDs, motors, solenoid valves, etc. Two modes can be selected: PWM mode-frequency (continuous), duty cycle. Note that the number of switching times cannot be set in this mode, and it has been cycled on and off; PULSE pulse mode-positive pulse width time, negative pulse width time, power-on delay start time, switch times are adjustable. With start and stop button, can control start and stop Wide voltage input 3.3-30V, 5.08mm terminal wiring parameter: Working voltage: 3.3~30V (note that the positive and negative poles are not reversed, otherwise it may be burnt) Frequency range: 1Hz~150KHz, accuracy is about 2%. Motor speed control generally choose 20KHZ Duty cycle range: 0- , 1% step Number of pulses: 1-9999, or infinite (display ‘----’ means infinite) Delay output time: 0.000s-9999s, the minimum can be set to 1ms Positive and negative pulse width length: 0.000s-9999s, the minimum can be set to 1ms Output load capacity: less than 8A (MOS switch tube) Output amplitude: The amplitude is equal to the power supply voltage (OUT+ and V+ are directly connected inside the module) Product size: 79mm*43mm*30mm Package list: 1*PWM dimming motor notes: 1. Due to manual measurement, please allow an error of 1-3mm. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Thanks! Made of standard material, quality assurance and practicality. Perfect function, bring you a wonderful experience. Every customer is entitled to a 30-day refund or replacement for damage/quality issues. If you have any questions, please feel free to contact us and we will solve it for you. Zk-Pp2K High Power Pwm & Pulse Generator Frequency Duty Cycle Adjustable Driver