Onboard MicroSD card holder: supports connection of an external SD card to store pictures or files. This enables expanded local storage for data logging, media, and firmware resources. Provides flexible clock options, multiple power modes, and precise control to support multiscenario lowpower operation. performance Xtensa 32bit LX7 dualcore processor: main frequency up to 240 MHz. Supports 2.4 GHz WiFi (802.11 b/g) and Bluetooth 5 (LE) with an onboard antenna for reliable wireless connectivity and efficient local processing. Memory configuration: onboard 512 KB, 384 KB ROM, 8 MB PSRAM and 16 MB Flash. Sufficient RAM and flash storage to handle firmware, data buffers, and local storage needs. Onboard 1.47inch LCD screen: 172x320 resolution, 262K color for clear visual displays. Exposes most GPIOs for convenient peripheral connections and includes an integrated fullspeed USB serial port for straightforward programming, debugging, and data transfer. Use scenarios IoT gateway or smart device: connect sensors via GPIO, log data to the SD card, and communicate with cloud services over WiFi or Bluetooth, all in a compact, integrated package. Field data logger: leverage external SD storage and lowpower modes to collect and store measurements in remote environments, with local display for status and easy USBbased data retrieval. Portable humanmachine interface: utilize the LCD for status displays and user interaction, while using the USB serial port for development, diagnostics, and firmware updates.