Photo 1 of Coliao 2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display

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Photo 1 of Coliao 2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD DisplayPhoto 2 of Coliao 2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display