ITEM NAME:2x Mini DC Motor PWM Speed Controller 5V-35V Speed Control Switch LED Dim CDZ.(4) PWM Duty Cycle: 1%-100%. (5) PWM Frequency: 10khz. We'd like to settle any problem in a friendly manner. (6) Shell Size: 30MM 24MM (Length Width, Without Handle). We want to make sure you are happy with our item.
