1. ESP32Mini minimum system development board, which can be developed using for compiler, has a rich function library, and a free and open source environment. 2. It also supports other compiler environments. The ESP32 module has a built-in Hall sensor, and WIFI is suitable for project or development use. 3.ESP32-S2 chip. The ESP32-S2 chip is equipped with a tensa32-bit LX7 single-core processor with an operating frequency of up to 240MHZ. 4. You can turn off the power of the CPU and use the low-power coprocessor to monitor the status changes of peripherals or whether certain analog quantities exceed threshold values. ESP32-S2 integrates a rich set of peripherals, including SPI, I2S, UART, I2C, LEDPWM, TWAI@ controller, ADC, DAC, touch sensor, temperature sensor and up to 43 GPIOs. 5. In addition, ESP32-S2 also has a full-speed USBOn-The-Go (OTG) interface for USB communication. Description: 1.Type: Development version 2. Specifications: ESP32-S2-WROOM development board RedBoard (C port) Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1x Development Board Module 3x Pin Header 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.