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Amazon.com : DC Motor Speed Controller, 110V AC Input 110V DC Output Motor Control Switch Sensitive for 50W 100W 120W Motors(500W) : Tools & Home Improvement
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PWM DC Motor Speed Controller DC 10 -55V Digital LED Display 0 -100% Adjustable Drive Module Input MAX 60A 12V 24V 36V 48V - AliExpress
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