ITEM NAME:High Voltage Waterproof Protective Electric Speed Controller with Fan Product Description Description: 320A  7.2V-16V High Voltage Version Waterproof  ESC Brushed  Electric Speed Control  for RC Car Truck Boat Models Brake or Crawler with Fan Feature: Automatically find center position. High frequency drive system. Overheating protection function. Low voltage protection function. Use low resistance field-effect tube. Suitable for car, the ship model use. The Modified High Power Electric Adjustment: 1. Increase the heat sink plus strong fan cooling. 2. Support up to 8T. 3. The outer powerful ubec function, provide 5.6 V, large current of largest 3A, with switch function. 4. UBEC support voltage input: 6-16.8 V. 5. Electrical modulation forward current: 600A, backward current: 300A. 6. The voltage range: support 6-16.8 V voltage, enclosed standby power BEC 2A. 7. Remote control back in auto brake function. Operational Guidelines: 1. Correctly connect to power battery. Strips on both ends of the red line is positive, black for negative.(or connect standard DC battery plug, field plug / T / banana plug) 2. The red and black line of electric speed controller output connect the car 540 motor red and black line. 3. Switch on electricity the power switch, the motor issued a "do" sound, then open the transmitter power, the motor will be "Do, Re, Mi" sound, prove that remote signal is connected and electrically controlled successfully. 4. Throttle operation, push to advance mode, before back to brake mode, after to back mode. (Avoid by all means accelerator directly push-pull midpoint  in the process of  car fast movement , prevent motor caused by blocked too much current instantaneous burning electrically controlled) Included: 1 X Speed Controller.Increase the heat sink plus strong fan cooling. High frequency drive system. Use low resistance field-effect tube. The outer powerful ubec function, provide 5.6 V, large current of largest 3A, with switch function.