Specification:Working Voltage: 3.3~30V (note that the positive and negative poles should not be reversed, otherwise it may burn)Frequency range1Hz~150KHz, accuracy about 2%. Motor speed control generally choose 20KHzDuty Range: 0-100%, 1% stepNumber of pulses1-9999, or infinity (display "----" represents infinity)Delayed exit time0.000s-9999s, limit can be set to 1msPositive and negative pulse width]: 0.000s-9999s, limit small adjustable to 1msOutput capacity: less than 8A (MOS switching tube)Output amplitudeamplitude and supply voltage same (OUT+ and V+ module internally directly connected)Product Size79*43*30mmProduct Weight42gCharacteristic:1. Direct drive for ED, motor, solenoid valve and other loads2. Two modes can be selected.PWM mode one - frequency (continuous), duty cycle. Note that the number of switches cannot be adjusted in this mode, it turns on and off constantly; PULSE pulse mode - positive pulse width time, negative pulse width time, on-delay start time, adjustable number of switches3. With start-stop button to control start and stop4. Wide voltage input 3.3-30V, 5.08mm terminal wiringThe package includes:1*High Performance ZK-PP2K PWM & Pulse Generator Frequency Duty Cycle Adjustable Driver