Module Highlights 1 Dual mode duty free step 0 1 in fine mode 2 LCD display frequency and duty cycle very clear PWM output can be set to the frequency and duty cycle 3 With locking function prevent misoperation 4 Wide frequency range high precision 5 Serial communication TTL levelFirst the module description PWM output you can set the frequency duty cycle Normal mode Frequency range 1Hz 150KHz Duty 000 100 duty free step 1 Fine mode Frequency range 1Hz 15khz Duty 00 0 100 duty free step 0 1 Frequency is divided into four ranges automatic switching 1 XXX no decimal point the smallest unit is 1Hz the value range of 1Hz 999Hz 2 X XX decimal point in the hundred the smallest unit is 0 01Khz the range of 1 00Khz 9 99Khz 3 XX X decimal point in ten the smallest unit is 0 1Khz value range of 10 0KHz 99 9KHz4 X X X decimal point in ten and hundred the smallest unit is 1Khz value range 1KHz 150KHzfrequency display 100 indicates PWM output 100Hz pulse 1 01 indicates PWM output 1 01K pulse 54 1 indicates that the PWM output has a pulse of 54 1 kHz 1 2 4 indicates that the PWM output is 124 kHz pulse Duty cycle range 0 100 All set parameters power down automatically saved Second the parameter settings This product through the Rotary Encoder to adjust the frequency and duty cycle can be determined according to the rotation speed to achieve rapid adjustment the default adjustment duty cycle short press adjust frequency long pres