Features:This driver board can be fit for DC brushless with hall sensor three-phase motors.It was with an heat sink,and also coming with speed controller and forward-reverse switch cable.This brushless motor controller features wide voltage high power, suitable for both small motor and large motor.This motor controller has the function of over-current protection.This item can be used directly, when you got it, wide voltage 5-36V, high power 350W, with heat sink, lead wire, control switch, so convenient.Specifications:Working voltage: 5-36VMaximum current: 16AMaximum power: 350WOver current protection: yesSize: length 63 x 45 x 27mm/2.48 x 1.77x 1.06inchWeight:100gInterface instruction:1.MA MB MC: phase line output connection motor2 5V GND: motherboard comes with original3.VCC GND: external DC power supply line4.SC :pulse signal output5.Z/F: positive inversion control line 5V or GND to achieve positive and negative inversion6.VR: speed signal input, the general external 100K tripod middle pin potentiometer VR, the remaining two feet 5V and GND main board.Package included:1 x Brushless with hall motor controller1 x Speed controller & forward-reverse switch cable1 x Power cable.