LILYGO® TTGO T-Call V1.3 V1.4 ESP32 Wireless Module GPRS Antenna SIM Card SIM800L Board

Version Information CN warehouse 1 4VUSA UK warehouse 1 3VFeature Hardware Specifications ChipsetESPRESSIF ESP32 240MHz Xtensa® dual core 32 bit LX6 microprocessorFLASHQSPI flash 4MB PSRAM8MBSRAM 520 kB SRAMButtonResetUSB to TTLCP2104 CH9102F CH304K Optional Modular interfaceUART SPI SDIO I2C LED PWM TV PWM I2S IRGPIO capacitor touch sensor ADC DACLNApre amplifierOn board clock40MHz crystal oscillator Working voltage2 7V 3 6VWorking currentAbout 70mASleep currentAbout 300uASIM cardOnly supports Nano SIM cardWorking temperature range 40℃ 85℃SizeWeight78 83mm 28 92mm 8 06mm 11 77g Power Supply Specifications Power SupplyUSB 5V 1ACharging current500mABattery3 7V lithium batteryJST Connector2Pin 1 25mmUSBType CWi Fi StandardFCC CE RED IC TELEC KCC SRRC NCCProtocol802 11 b g n 802 11n speed up to150Mbps A MPDU and A MSDU polymerization support 0 4μS Protection intervalFrequency range2 4GHz 2 5GHz 2400M 2483 5M Transmit Power22dBmCommunication distance300mbluetooth Protocolmeet bluetooth v4 2BR EDR and BLE standardRadio frequencywith 97dBm sensitivity NZIF receiver Class 1 Class 2Class 3 emitter AFHAudio frequencyCVSDSBC audio frequencySoftware specification Wi Fi 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