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12V 30W Permanent Magnet DC Motor, 3000RPM High Speed CW/CCW Electric Gear Motor for DIY Generator and 12V-40V 10A PWM DC Motor Speed Controller Fan Controller with Knob-High Efficiency - - Amazon.com
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Amazon.com: 6-60V 12V 24V 36V 48V 30A PWM DC Motor Speed Controller Digital Regulator Variable Speed Switch Display LED Control Circuit Board Start Stop Switch : Tools & Home Improvement
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