This brushed electric controller with high frequency drive system can automatically find the center position. It has overheat, out of control, low voltage protection, safe to use. It is widely used in RC car and RC ship. Portable and small size for convenient storage. Features - Color: Silver. - Material: ABS and Metal. - Mainboard Size: About 10x7.6x2.8cm. - Shell Size: About 11x7.8x3.8cm. current: 60A. - Input supply voltage: DC -55V. - Continuous current: 40A. - range: 0-100%. - Control frequency: 15KHZ. - Rotary knob: 100K (with ). - Portable and safe. - High frequency drive system. - Overheat, out of control, low voltage protection, safe to use. - Accuracy circuit design, high efficiency, high torque and high power. - Equipped with outer shell to protect the controller board from damage as well as dissipate heat. Package list: 1 x Controller