PWM DC Motor Speed Controller 7-70V 30A Switch Control 12V 24V 36V 48V with 30

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7-70V PWM DC Motor Speed Controller, 12V 24V 36V 48V 60V 70V Motor Speed Cont...

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PWM DC Motor Speed Controller Switch 40A 12V 24V 36V 48V 2000W Reversible, Hi...