<p>Use low-power dual-core 32-bit CPU, which can be used as an application processor.</p> <p>The main frequency is up to 240MHz, and the computing power is up to 600 DMIPS, Built-in 520 KB SRAM</p> <p>Support UART\/SPI\/I2C\/PWM\/ADC\/DAC and other interfaces</p> <p>Support OV2640 and OV7670 cameras, built-in flash</p> <p>Support picture WiFI upload, Support TF card, Support multiple sleep modes.(note: Different batches may have different appearance, which does not affect use.)</p> <p>Spec: </p> <p>SPIFlash default 32Mbit</p> <p>RAM internal 520KB</p> <p>Wi-Fi 802.11b\/g\/e\/i</p> <p>Bluetooth Bluetooth 4.2BR\/ and BLE standard</p> <p>Support interface (2Mbps) UART,SPI,I2C, PWM</p> <p>Support TF card,maximum support 4G</p> <p>IO port 9</p> <p>Serial port rate default 115200bps</p> <p>Spectrum range: 2400~2483.5MHz</p> <p>Antenna form Onboard PCB antenna,gain 2dBi</p> <p>Image output format:JPEG (only OV2640 support),BMP,GRAYSCALE</p> <p>Packaging DIP-16</p> <p>Transmit power 802.11b:172dBm (@11Mbps)</p> <p>802.11g:142dBm (@54Mbps)</p> <p>802.11n:132dBm (@MCS7)</p> <p>Receiving sensitivity ,1Mbps:-90dBm</p> <p>, 11Mbps:-85dBm</p> <p>6Mbps(1\/2BPSK):-88dBm</p> <p>54Mbps (3\/464-QAM):-70dBm</p> <p>MCS7 (65Mbps, 72.2Mbps):-67dBm</p> <p>Power consumption Turn off the flash: 180mA@5V</p> <p>Turn on the flash and adjust the brightness to the maximum:310mA@5V</p> <p>Deep-sleep:The lowest power consumption can reach 6mA@5V</p> <p>Moderm-sleep:the lowest can reach 20mA@5V</p> <p>Light-sleep:the lowest can reach 6.7mA@5V</p> <p>Security WPA\/WPA2\/WPA2-Enterprise\/WPS</p> <p>Working temperature:-20~70</p> <p>Storage environment:-40~125,Less than90%RH</p> <p>Application:</p> <p>Home smart device image transmission</p> <p>Wireless monitoring</p> <p>Smart agriculture</p> <p>QR wireless recognition</p> <p>Wireless positioning system signal</p> <p>And other IoT applications</p> <p>Screen type:B-Capacitive</p> <p>Material:plastic+metal</p> <p>colour:Black+Yellow</p> <p>Package Contents: </p> <p>1 x Development Board</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>