Main Control Chip: STM32F407VET6 (100-pin) IMU Sensor: 3- acceleration, 3- gravitational acceleration Serial Servo Interface: 2 channels (6-12V) USB Serial Port: 1xUSB Type-C Response Components: 1 buzzer, 3 LEDs, 2 RGB lights Download Interface: One-click serial download Board Layers: Industrial-grade 2-layer PCB Mounting Hole Spacing: 57.5x48.5mm Motor Driver Chip: SA8870C (with overcurrent protection) Encoder Motor Interface: 4 channels ( drive) PWM Servo Interface: 4 channels (5-12V) IIC Interface: 1 x 4-pin interface Power Input: 6-14V wide voltage input External Power Output: 5V 5A Protection Circuitry: Overheat, short-circuit, and overcurrent protection Dimensions: 85x56x17mm Weight:329g Color:As Shown Material:PC Package Contents: 1 * 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.