Description: The speed controller is with durable texture, which can last for long. As a speed controller with overheat protection design, it is safe to use. The speed controller is made of synthetic material. The length of the speed controller is 13.1cm, the width is 4.6cm, and the height is 3.9cm. It is suitable for car model, ship model, motor, etc. Item Name: Speed Controller Material: Synthetic Backward Current: 300A Forward Current: 600A Input Voltage: 6--16.8V Size Details: Size: 13.1cm x 4.6cm x 3.9cm(Approx.) Notes: Operation Guide: 1. The correct connection with the power supply battery, the red color line at both ends of the wiring board is positive, black is negative. (Or connect standard DC battery plug Datian male plug/T plug/banana plug). 2. ESC output red and black lines were connected to the car 540 motor red and black lines. 3. Open ESC power switch, the motor issued a prompt sound, and then turn on the transmitter power, the motor will be issued "do ~ la ~ mi" sound, that remote control signal has been successfully connected with ESC. 4. Thottle operation, push ahead means ahead mode, centered is in brake mode, and backward is in reverse mode.(To prevent the motor from being blocked and causing the ESC to be burned due to the excessive current, please don't push or pull the accelerator directly past the mid point when the car move fastly.) Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension diff Package Includes: 1 x Speed Controller