Fangrui Product Details Features: 1. It Can Directly Drive Led, Motor, Electromagnetic And Other Loads 2. Two Modes Can Be : Pwm Mode Frequency (continuous), Duty Cycle. Note That The Number Of Switches Cannot Be Set In This Mode, And It Has Been Turned On And Off In A Cycle; Pulse Pulse Mode: Positive Pulse Width Time, Negative Pulse Width Time, Power-on Delay Start Time, And Switch Times Are Adjustable. 3. With Start And Stop Button, Can Control Start And Stop 4. Wide Voltage Input 3.3-30v, 5.08mm Terminal Wiring 5. Note That When The High-power Pwm Driver (pp2 And Pp2k Type) Is Not Connected To The Load, There Is No Waveform, And There Is Only A Waveform After The Load Is Connected Description: 1. Working Voltage: 3.3~30v 2. Frequency Range: 1hz~150khz, Accuracy About 3. Duty Cycle Range: 0- Step 4. Number Of Pulses: 1-9999, Or Infinite (display --- Means Infinite) 5. Delayed Output Time: 0.000s-9999s, The Minimum Can Be Set To 1ms 6. Positive And Negative Pulse Width Length: 0.000s-9999s, The Minimum Can Be Set To 1m