WAVESHARE ESP32-S3 4.3-Inch LCD Smart Voice Touchscreen Development Board 1. Equipped with a high-performance Xtensa 32-bit LX7 dual-core processor with a clock speed of up to 240MHz 2. Supports 2.4 GHz Wi-Fi (802.11 bgn) and Bluetooth 5 (LE), with an onboard antenna 3. Built-in 512KB SRAM and 384KB ROM, stacked with 16MB Flash and 8MB PSRAM 4. Onboard 4.3-inch LCD capacitive touchscreen, 800 × 480 resolution, 65K color 5. Supports I2C interface control of capacitive touch, 5-point touch, and interrupt support 6. Onboard ES8311 audio codec chip and ES7210 echo cancellation circuit 7. Onboard voltage regulator chip, supporting a wide voltage supply of 7 ~ 36V 8. Onboard RTC chip and battery holder, ensuring no data loss when the battery is installed 9. Onboard resources include I2C interface, Micro SD card slot, MX1.25 2PIN battery interface, and digital isolated IO. 10. Inputs feature bidirectional opto-isolation, supporting both passive and active switch inputs; active inputs support positive and negative voltages. 11. Outputs feature opto-isolation for enhanced drive capability; sink current up to 450mA (MAX). 12. External LED indicators for easy monitoring of power and battery charging status. 13. Supports flexible clock and individual module power settings for precise control, enabling low-power modes in various scenarios. 14. Capacitive 5-point touch for intuitive, WYSIWYG operation and a seamless multi-touch UI. 15. Touch functionality via I2C signal, supporting 5-point touch. 16. IPS display panel for superior display performance and a 160-degree viewing angle. 17. Supports expansion with various peripherals; connects to more devices via I2C and isolated IO interfaces. 18. HMI human-machine interface (HMI): The HMI (also known as the user interface or user interface) is the medium for interaction and information exchange between the system and the user. It converts information from its internal form to a form acceptable to humans. 19. Smart home control terminal: this terminal can serve as a central control screen for the home, enabling management of devices such as lights, curtains, and air conditioners via touch and AI voice control. It also displays real-time temperature, humidity, security status, and energy consumption information.