40A 30A 20A PWM DC Motor Speed Regulator DC6-55V 4-bit Digital Tube tachometer with forward and reverse rotation Button+knob

40A 30A 20A PWM DC Motor Speed Regulator DC6-55V 4-bit Digital Tube tachometer with forward and reverse rotation Button+knob
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sku: 1005006114912921
$6.32
Shipping from: China
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