Parameter: Use low-power dual-core 32-bit CPU, which can be used as an application processor. The main frequency is up to 240MHz, and the computing power is up to 600 DMIPS. Built-in 520 KB SRAM. Support UART/SPI/I2C/PWM//DAC and other interfaces, Support OV2640 and OV7670 cameras, built-in flash, Support WiFI upload. Support TF card, Support multiple sleep modes, Embedded Lwip and FreeRTOS. Support STA//STA+ working mode, Support Smart Config/AirKiss one-click network configuration, Support secondary development. Specifications: Working voltage:4.75-5.25V SPIFlash:default 32Mbit RAM:internal 520KB Wi-Fi:802.11b/g/e/i Bluetooth:Bluetooth 4.2BR/ and standard Support interface (2Mbps): UART, SPI, I2C, PWM Support TF card:maximum support 4G IO port:9 Serial port rate default:115200bps Spectrum range:2400 ~2483.5MHz Antenna form:Onboard PCB antenna, gain 2dBi output :JPEG (only OV2640 support), BMP, GRAYSCALE Transmit power: 802.11b:172dBm (@11Mbps) 802.11g:142dBm (@54Mbps) 802.11n:132dBm (@MCS7) Receiving sensitivity: , 1Mbps:-90dBm , 11Mbps:-85dBm 6Mbps(1/2BPSK):-88dBm 54Mbps (3/464-QAM):-70dBm MCS7 (65Mbps, 72.2Mbps):-67dBm Power consumption Turn off the flash:180mA@5V Light-sleep:the lowest can reach 6.7mA@5V Security:WPA/WPA2/WPA2-Enterprise/WPS Working temperature:-20 ~ 70 Storage environment:-40 ~ 125 , Less than 90%RH Application device transmission Wireless monitoring Smart agriculture QR wireless recognition Wireless positioning system signal And other IoT applications Material: PCB+Metal colour: Yellow Package Contents: 1 x ESP32-S3 development board (including 1.9-inch screen) 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.