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 SRAMSupport UART/SPI/I2C/PWM/ADC/DAC and other interfacesSupport OV2640 and OV7670 cameras, built-in flashSupport picture WiFI upload, Support TF card, Support multiple sleep modes.(note: Different batches may have different appearance, which does not affect use.)Spec: SPIFlash default 32MbitRAM internal 520KBWi-Fi 802.11b/g/e/iBluetooth Bluetooth 4.2BR/ and BLE standardSupport interface (2Mbps) UART,SPI,I2C, PWMSupport TF card,maximum support 4GIO port 9Serial port rate default 115200bpsSpectrum range: 2400~2483.5MHzAntenna form Onboard PCB antenna,gain 2dBiImage output format:JPEG (only OV2640 support),BMP,GRAYSCALEPackaging DIP-16Transmit power 802.11b:172dBm (@11Mbps)802.11g:142dBm (@54Mbps)802.11n:132dBm (@MCS7)Receiving sensitivity ,1Mbps:-90dBm, 11Mbps:-85dBm6Mbps(1/2BPSK):-88dBm54Mbps (3/464-QAM):-70dBmMCS7 (65Mbps, 72.2Mbps):-67dBmPower consumption Turn off the flash: 180mA@5VTurn on the flash and adjust the brightness to the maximum:310mA@5VDeep-sleep:The lowest power consumption can reach 6mA@5VModerm-sleep:the lowest can reach 20mA@5VLight-sleep:the lowest can reach 6.7mA@5VSecurity WPA/WPA2/WPA2-Enterprise/WPSWorking temperature:-20~70Storage environment:-40~125,Less than90%RHApplication:Home smart device image transmissionWireless monitoringSmart agricultureQR wireless recognitionWireless positioning system signalAnd other IoT applicationsScreen type:B-CapacitiveMaterial:plastic+metalcolour:Black+YellowPackage Contents: 1 x Development BoardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.