Waveshare ESP32-S3 4.3inch 800×480 Touch LCD Development Board 1. Equipped with high-performance Xtensa32-bit LX7 dual-core processor, the main frequency is up to 240MHz 2. Support 2.4 GHz Wi-Fi (802.11bgn) and Bluetooth5 (LE), onboard antenna 3. Built-in 512 KB SRAM and 384 B ROM, stacked 16 MB Flash and 8MB PSRAM 4. Onboard 4.3-inch LCD capacitive touch screen, 800×480 resolution, 65K color 5. Support I2C interface to control capacitive touch, 5-point touch, support interruption 6. Onboard voltage regulator chip, support 7-36V wide voltage power supply 7. Onboard RTC chip and rechargeable battery to achieve power-off time without loss 8. Onboard CAN, RS485, I2C interface, Micro SD card holder, GH1.25 2P battery interface and digital quantity isolation IO and other resources 9. Input with bidirectional optocoupler isolation, supports passive and active switch input, active supports positive voltage and negative voltage 10. Output with optocoupler isolation, stronger driving capability, sink current up to 450mA (MAX) 11. External LED indicator, convenient for checking power and battery charging status 12. Support flexible clock, module power separate setting and other precise control, realize multi-scenario low power mode 13. Application areas: HMI human-machine interface, LVGL GUI development 14. Product size: 112.4 x 75.1 x 17.4mm, 116.3 x 79 x 18mm 15. Weight: 115g, 149g