3 Channel Signal Generator PWM Pulse Frequency Duty Cycle Adjustable Module LCD,Cycle Adjustable Module LCD 3 Channel Signal Generator PWM Pulse Frequency Duty, Infrared Sensor, Crystal Oscillator, Sensor module, Touch Sensor Module, LCD display frequency and duty cycle, very clear, PWM output can be set to the frequency and duty cycle;, 100 indicates PWM output 100Hz pulse,PWM Module, Duty Cycle Adjustable Module LCD 3 Channel Signal Generator PWM Pulse Frequency.