This speed controller switch is for 3-Phase brushless motor, and support motor CW CCW Stable performance, simple and most cost-effective multi-function operation. The speed of the motor can be regulated by the potentiometer, easy to use. With wide voltage range, DC5-36v, and protective current is 15A. Small size and elegant appearance. Output current: less than 15A Speed regulating mode: potentiometer (270 degree linear) Speed adjustment range: 0-100% support for Motor: brushless motor Connection type: fence type terminal Knob specification: 100K (with switch) Weight: 87g colour:Green+black Material:Metal + plastic size:8 x 6 x 2.8cm Package Contents: 1 x Control Regulator Module Only the above package content, other products are not included. Note: Light 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 +/- 1-3cm.