20A High-Power Brushless ESC Module Built-in heatsink, stable performance, good anti-interference ability 1. First, adjust the knob of the ESC to the minimum, and then connect the 5V power supply to the ESC; 2. Connect the ESC to a 12V power supply. You will hear the ESC start-up sound. After about 2 seconds, a long "beep" sound will indicate that the self-test is normal and everything is ready. Wait for the throttle to be pressed to start the motor.If there is no response, please check if the 12V power supply is intact and if the 12V power supply connection is reliable. If the motor emits a "beep-beep-" sound 2 seconds after powering on, it means that the servo knob is not adjusted to the minimum and the throttle channel is reversed. Adjust the knob to the minimum until you hear a long "beep-----" sound. If the motor emits a "beep-beep-beep-beep-" sound (with a 1-second interval) after power-on, it indicates that the power supply voltage is too low or too high. Please check the power supply voltage. 3. Adjust the ESC controller mode to manual mode, then start rotating the knob; the motor will begin to rotate. Output performance:20A Power input:12V Control signal type:PWM Throttle signal frequency range:50Hz-400Hz Signal pulse width:0.9ms-2ms ambient temperature:-40~+85°C working temperature:-40~+85°C Color: As Shown Material: PCB Package Contents: 1*20A ESC Module 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.