Item name: AM32 ESC Voltage: 2-4S Master control: AT32F421 Adopt SSA6288Q pre drive + SGM power chip + MOS Used for drone, fixed wing aircraft, RC crawler car brushless motors Specification:A:no BEC single-way: The unidirectional program has been pre installed, soldering wire and connected to the power supply, after the signal is given, it work. / B:no BEC dual-way: It has been configured as a two-way program. Under heavy load conditions, heat dissipation is required. Friendly reminder: The default parameter is 2200KV. Some motors may not start properly. It is necessary to adjust the parameters of the ESC according to the motor parameters for better adaptation to the motor. Please purchase with caution if you are not familiar with AM32! Parameter adjustment method for AM32 ESC Note: Before operation, please confirm the following: 1. The parameter adjustment card is correctly connected to the ESC. 2. The ESC is powered on. 3. The parameter adjustment card is connected to the computer. Color: As shown Material: PCB<br><br>Package Contents: 1 x Mini electronic speed controller 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.