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

HardwareSpecificationsChipsetESPRESSIF ESP32 WROVER 240MHz Xtensa dual core 32 bit LX6 microprocessorFLASHQSPI 4MBFlash 8MBPSRAMSRAM 520 kB SRAMKEYReset BOOTSwitchBAT switchPower indicator lampRedUSB to TTLCP2104ModularinterfaceSD card UART SPI SDIO I2C LED PWM TV PWM I2S IRGPIO capacitor touch sensor ADC DACLNApre amplifierOn board clock40MHz crystal oscillator Working voltage2 3V 3 6VWorking currentabout 40mASleep current1mAWorking temperature range 40℃ 85℃Size91 10mm 32 75mm 19 90mmPower SupplySpecificationsPower SupplyUSB 5V 1ACharging current1000mABattery3 7V lithium batteryWi FiDescriptionStandardFCC CE TELEC KCC SRRC NCCprotocol802 11 b g n e i 802 11n speed up to150Mbps A MPDU and A MSDU polymerization support 0 4S Protection intervalFrequency range2 4GHz 2 5GHz 2400M 2483 5M Transmit Power22dBmCommunication distance300mbluetoothDescriptionProtocolMeet bluetooth v4 2BR EDR and BLE standardRadio frequencyWith 98dBm sensitivity NZIF receiver Class 1 Class 2Class 3 emitter AFHAudio frequencyCVSDSBC audio frequencySoftware specificationDescriptionWifi ModeStation SoftAP SoftAP Station P2PSecurity mechanismWPA WPA2 WPA2 Enterprise WPSEncryption Type AES RSA ECC SHAFirmware upgradeUART download OTA Through network host to download and write firmware Software DevelopmentSupport cloud server development SDK for user firmware developmentNetworking protocolIPv4 IPv6 SSL TCP UDP HTTP FTP MQTTUser ConfigurationAT Instruction set cloud server a