3pcs TTGO T-Energy ESP32 8MByte PSRAM WiFi bluetooth Module 18650 Battery ESP32-WROVER-IB Development Board

Hardware Specifications Chipset ESPRESSIF-ESP32-WROVER 240MHz Xtensa dual-core 32-bit LX6 microprocessor FLASH QSPI 4MB Flash / 8MB PSRAM SRAM 520 kB SRAM KEY Reset, BOOT Switch BAT switch Power indicator lamp Red USB to TTL CP2104 Modular interface SD card, UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IRGPIO, capacitor touch sensor, ADC, DACLNA pre-amplifier On-board clock 40MHz crystal oscillator Working voltage 2.3V-3.6V Working current about 40mA Sleep current 1mA Working temperature range -40 ~ +85 Size 91.10mm*32.75mm*19.90mm Power Supply Specifications Power Supply USB 5V/1A Charging current 1000mA Battery 3.7V lithium battery Wi-Fi Description 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 0.4S Protection interval Frequency range 2.4GHz~2.5GHz(2400M~2483.5M) Transmit Power 22dBm Communication distance 300m bluetooth Description 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 frequency Software specification Description 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 for user firmware development Networking protocol IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT User Configuration AT + Instruction set, cloud server, android/iOSapp OS FreeRTOS Package includes: 3 x ESP32 WROVER development board 6 x Pin