The AM32 firmware is designed based on the ARM32-bit processor and is used to control brushless motors (BLDC). This firmware is designed to achieve the effect of throttle linearization by starting the motor smoothly and quickly The AT32F421 main chip (32-bit) is used, and its operating frequency is as high as 120MHz. The ultra-high computing power makes the flight feel more delicate and smoother It uses 24 high-performance MOSFETs, with an internal resistance as low as 1.1mΩ, a withstand voltage of 40V, and a continuous current of 235A. It can drive motors of sizes with ease, which is both violent and It uses a 3000W ultra-high-power transient voltage suppression diode to filter out the back electromotive force generated by the motor to a great extent, and better protect the entire electronic equipment It uses 22 top-level ceramic capacitors, each 22uF, with a withstand voltage of 35V. The ESC works more stably, has a longer life, and greatly reduces equipment failures<br><br>lnput voltage: 3-6S (11-27V) Continuous current: 55A*4CH, 65A PWM frequency: 8kHz-96kHz Firmware version:AM32 Main control chip: AT32F421 ESC protocol: DShot 600/300,PWM Installation hole: 30.5x30.5mm (4mm) (The product appearance and printed words depending on the batch, but this does not affect use) Colour:Blue Material:PCB<br><br>Package Contents: 1 x ESC<br><br>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.