DollaTek ESP32 8MByte PSRAM WiFi Bluetooth Module ESP32_WROVER_B Development Board Suitable for 18650 Battery

Specifications: 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: 91.10mmx32.75mmx19.90mm 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 0.4?S Protection interval frequency range: 2.4GHz~2.5GHz(2400M~2483.5M) Transmit Power: 22dBm communication distance: 300m 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 Package include: 1 x ESP32 WROVER Development Board 2 x Pin