Specifications: Find the center position automatically. High frequency drive system. Use low resistance field effect tube. Suitable for model car, boat. Operation Guide: 1. The correct connection with the power supply battery, the red line at both ends of the wiring board is positive, black is negative. (Or connect standard DC battery plug Daejeon 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 "beep" sound, and then turn on the transmitter power, the motor will be issued "duo ~ la ~ mi" sound, that remote control signal has been successfully connected with ESC. Item Name: Brush Motor Speed Controller Version: High Pressure Version Battery Support: Ni-MH Battery 4 to 6 Groups (4.8V ~ 7.2V); Lithium Battery 3 Groups (7.4V-11.1V) Current: Forward 320A, Back 160A, Brake 270A BEC Output: 5.6V, 2A Features: Portable, Durable, Easy to Use Size: 43 x 29 x 27mm/1.69 x 1.14 x 1.06" (Approx.) Notes: This ESC, with 3S (12V), can only bring the motor with no more than 380. With 2S (8.4V), only with no more than 540 motor. 320A two-way electronic governor with brake (with waterproof function). Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Brush Motor Speed Controller