Brushless Controller rated current: 25A, cut-off voltage: 40V, suitable for 52V 1200W motor, Dual-drive controller, with anti-theft alarm function. supports max speed of 60KM/H (Note: the final speed depends on your motor, 60KM/H speed requires the motor to support the motor to reach 1000W 1200 speed or more) The is made of aluminium alloy with groove, which can protect the inner circuit and has good heat dissipation feature to avoid thermal overloading. Provide steady speed and sensitive control of and direction changes, bringing you a more comfortable riding experience. Only Suitable for with JP controller Electric Bike, Electric Scooter. Note:Due to different production batches, there are differences in appearance label printing, which not affect the use. Colour:Silver & Black Material:aluminium alloy Package Contents: 2 x Brushless DC Motor 1 x Display Screen Only the above package content, other products are not included. Note: Light reflection 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.