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/ADC/DAC and other interfaces. Support OV2640 and OV7670 cameras, built-in flash. Support picture WiFI upload. Support TF card Support multiple sleep modes.Embedded Lwip and FreeRTOS. Support STA/AP/STA+AP 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/n/e/i. Bluetooth Bluetooth 4.2BR/EDR and BLE standard. Support interface (2Mbps) UART, SPI, I2C, PWM Support TF card, maximum support 4G Specifications: with touch IO port 9 Serial port rate default 115200bps Spectrum range 2400 ~2483.5MHz Antenna form Onboard PCB antenna, gain 2dBi Image output format: JPEG (only OV2640 support), BMP, GRAYSCALE Transmit power 802.11b: 17±2dBm (@11Mbps) 802.11g: 14±2dBm (@54Mbps) 802.11n: 13±2dBm (@MCS7) Receiving sensitivity CCK, 1Mbps: -90dBm CCK, 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 Product size: 181X108mm Application Home smart device image transmission Wireless monitoring Smart agriculture QR wireless recognition Wireless po