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 1000W1200W or higher). Made of aluminum alloy with grooves for protection of internal circuitry and effective heat dissipation to prevent thermal overload. Provides steady speed control and responsive direction changes for a smoother riding experience. Compatible only with JP controller electric bikes and electric scooters. Appearance and label printing may vary between batches, but this does not affect functionality. Color: Silver. Material: Aluminum alloy. Package Contents: 2x Brushless DC Motor. Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3cm.