Specification:Origin: Mainland China F: Default 32MbiM: Internal 520KB+External 4M PSRAMBluetooth-compatible: Bluetooth-compatible 4.2 BR/EDR and BLE standardsWiFi: 802.11 b/g/n/e/iSupported interfaces: UART, , I2C, PWMTF card support: up to 4GI0 port: 9Serial port speed: default 115200 bpsImage output format: JPEG (only supported by 0V2640), BMP, GRAYSCALESpectrum range: 2412~2484MHz form: onboard with a gain of 2dBinsmiion power: 802. 11b: 17+2 dBm (@ 1 lMbps),802.11g: 14+2 dBm (@ 54Mbps),802.11n: 13+2 dBm (@ MCS7),Receiving sensitivity: CCK, 1 Mbps: -90dBm,CCK, 11 Mbps: -85dBm,6 Mbps (1/2 BPSK): -88dBm,54 Mbps (3/4 64 QAM): -70dBm,MCS7 (65 Mbps, 72.2 Mbps): -67dBmPower consumption: Turn off f: 180mA@5V ,Turn on the f and adjust the brightne to maximum: 310mA@5V ,Deep sleep: The minimum power consumption can reach 6mA@5V ,Modern sleep: minimum achievable 20mA@5V ,Light sleep: minimum achievable 6.7mA@5V ,Safety power supply range: WPA/WPA2/WPA2 Enterprise/WPS5VWorking temperature: -20C-85 "CStorage environment: -40 C-90 ° C,