ITEM NAME:DC 6-30V 12V 24V Max 8A PWM 16kHz Motor Speed Controller Digital Display Sw B3W9 DC 6-30V 12V 24V Max 8A PWM 16kHz Motor Speed Controller Digital Display Sw B3W9 The motor speed controller allows controlling the direction of a DC motor using a Pulse-Width-Modulated (PWM) DC voltage with a duty cycle fully adjustable from 0%-100%. The motor speed controller can easily provide a continuous current of 8A to your DC motor or other DC load. The circuit also includes the function of digital display whose digital tube display the duty ratio The digital display the duty ratio Input Supply Voltage: 6V-30V DC Output Current: Rated current 5A (8A MAX, can not be prolonged) PWM Frequency: 16kHz Duty Cycle Adjustable: 0%-100% Size(L*W*H): Approx. 7.8x4.2x2.5cm/ 3.07x1.65x0.98" Material: plastic + metal Package Included: 1 x DC 6-30V 12V 24V Max 8A PWM Motor Speed Controller Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.