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DC 6-60V 20A DC Motor Speed Controller Regulator Digital Display 0~100% adjustable Forward Backward
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PWM 2000W AC Motor Speed Controller 50-220V 25A Adjustable Motor Speed Controller Voltage Regulator
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PWM DC Motor Speed Controller DC 9V-60V 20A 1200w CW CCW Reversible Switch
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PWM Signal Generator Module Square Wave Pulse Signal Output PWM Frequency Meter XY-KPWM 1Hz-150KHz