5PCS Mini DC-DC 4.5V-35V 5A 90W PWM DC Motor Speed Controller Module Regulator Control Adjust Adjustable Board Switch 12V 24V 5PCS Mini DC-DC 4.5V-35V 5A 90W PWM DC Motor Speed Controller Module Regulator Control Adjust Adjustable Board Switch 12V 24V. Sale price : $7.99 Category : Consumer Electronics