Advanced Connectivity: The device is equipped with RS485 500kbps transceiver modules to stable and reliable data communication in industrial environment Wireless Capabilities: Supports WIFI and Bluetooth functions, allowing easy integration into wireless networks and seamless communication with other devices Enhanced Display: Features a high-resolution 4.0-inch LCD screen, providing clear and vivid visuals for an enhanced user interface Expandable Storage: Includes a TF card slot for expandable storage, ensuring there is enough space for applications and data for Qwiic Connectivity: Seamlessly integrates with for Qwiic-enabled devices for rapid prototyping and development MCU1: ESP32-S3 Flash: 16MB PSRAM: 8MB Wireless communication protocol: 2.4 GHz Wi-Fi + Bluetooth 5 (LE) MCU2: ESP32-H2 Flash: 4MB Wireless communication protocol: IEEE 802.15.4 + Bluetooth5 (LE) Supported development platform: for , PlatformlO-IDE, Micropython 4.00inch 480x480 IPS ST7701S LCD: Visible pixels: 480 (W)x480 (H) Interface: SPI + RGB Compatibility library: for Arduino_GFX, LVGL Colour:As Shown Material:PCB Package Contents: 1 x Development Board Kit 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.