Using AM32 open source firmware, you can freely adjust parameterssupport dshot/pwm signals, linear at low speed, violent at high speed, very smooth speed adjustment, and no heat at low temperature.Supports two-way/one-way operation, adjustable drag brake, sinusoidal start and other functions, fast forward and reverse switching is very smooth.AM32-20A Parameters1: Voltage range 2-3S (7.4-12.6V)2: Single cell LIPO protection voltage 3.0V3: Continuous working current 20A4: Instantaneous current up to 30A5: BEC output: 5V2A6: Size 40x18x6 (mm)7: PCB board size: 35x17MM8: Weight: about 8.6GColour:As ShownMaterial:PCBDue to different batches, there may be differences in product appearance and printed text, which not affect usePackage Contents:1 * AM32 20A ESCOnly 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.