ITEM NAME:2x Mini DC Motor PWM Speed Controller 5V-35V Speed Control Switch LED Dim XIE Descriptio n Specifications: (1) Working Voltage: DC5V-35V (2) Control Power: 90W (Maximum) (3) Quiescent Current: 0.015A (Standby State) (4) PWM Duty Cycle: 1%-100% (5) PWM Frequency: 10khz (6) Shell Size: 30MM * 24MM Â (Length * Width, Without Handle) (7) Total Height: 15MM Package Included: 2 *Â DC Motor Speed Controllers We offer you what you need! 2pcs 5V-35V 6V 9V 12V 18V 24V 5A PWM DC Motor Speed Controller Switch LED Dimmer.(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.