The ESP32-H2-WROOM-02C module is based on the ESP32-H2 chip , and can be mounted onto the surface of a PCB board. It has 19 GPIOs, and the pin usage is compatible with ESP8684-WROOM-02C/UC, ESP-WROOM-02D/U, ESP-WROOM-02. It supports UART, LED PWM, I2C, SPI，I2S，RMT, etc.