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 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 Packaging DIP-16 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 Turn on the flash and adjust the brightness to the maximum: 310mA@5V Deep-sleep: The lowest power consumption can reach 6mA@5V Moderm-sleep: the lowest can reach 20mA@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 color:Yellow Material:PCB+Metal Package Contents: 1 x ESP32 development board display screen 1 x USB cable 1 x Transparent storage box Only the above package content, other 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.