WIFI Standard FCC/CE/TELEC/KCC/SRRC/NCC,protocol 802.11 b/g/n/e/i (802.11n,speed up to150Mbps)A-MPDU and A-MSDU polymerization,support 0.4μS Protection interval,frequency range 2.4GHz-2.5GHz(2400M-2483.5M),Transmit Power 22dBm,communication distance 300m.Bluetooth protocol meet bluetooth v4.2BR/EDR and BLE standard,radio frequency with -98dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH,audio frequency CVSD&SBC audio frequencySoftware specification wifi Mode Station/SoftAP/SoftAP+Station/P2P,security mechanism WPA/WPA2/WPA2-Enterprise/WPS,Encryption Type AES/RSA/ECC/SHA,firmware upgrade UART download/OTA(Through network/host to download and write firmware),Software Development Support cloud server development /SDK compatible withuser firmware development,networking protocol,IPv4,IPv6,SSL,TCP/UDP/https/FTP/MQTT,User Configuration AT + Instruction set, cloud server, android/iOSapp.OS FreeRTOSHardware SpecificationsChipset ESPRESSIF-WROVER-B 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessorFLASH QSPI flash/SRAM, up to 4 x 16 MBSRAM 520 kB SRAMButton reset,bootButton OK,UP,DOWN,LEFT,RIGHTswitch BAT switchdispaly 0.96 SSD1306Power indicator lamp redUSB to TTL CH9102F QFN24Modular interface UART,SPI,SDIO,I2C,LED PWM,TV PWM,I2S,IRGPIO,capacitor touch sensor,ADC,DACLNA pre-amplifieron-board clock 40MHz crystal oscillatorworking voltage 2.3V-3.6Vworking current about 60mAsleep current 470uAworking temperature range -40℃ - +85℃size 108.51mmx29.01mmPower Supply SpecificationsPower Supply USB 5V/1Acharging current 1000mAColour:As ShownMaterial:PlasticPackage Contents:1x ESP32 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.