Frequency generator for PWM and pulse signal outputSpecification:<br> Working Voltage: 3.3~30V (note that the positive and negative poles should not be reversed, otherwise it may burn)<br> Frequency range1Hz~150KHz, accuracy about 2%. Motor speed control generally choose 20KHz<br> Duty Range: 0-100%, 1% step<br> Number of pulses1-9999, or infinity (display "----" represents infinity)<br> Delayed exit time0.000s-9999s, limit can be set to 1ms<br> Positive and negative pulse width]: 0.000s-9999s, limit small adjustable to 1ms<br> Output capacity: less than 8A (MOS switching tube)<br> Output amplitudeamplitude and supply voltage same (OUT+ and V+ module internally directly connected)<br> Product Size79*43*30mm<br> Product Weight42g<br> Characteristic:<br> 1. Direct drive for ED, motor, solenoid valve and other loads<br> 2. Two modes can be selected.<br> 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 switches<br> 3. With start-stop button to control start and stop<br> 4. Wide voltage input 3.3-30V, 5.08mm terminal wiring<br> The package includes:<br> 1*High Performance ZK-PP2K PWM & Pulse Generator Frequency Duty Cycle Adjustable Driver