LILYGO® T-Call V1.4 SIM800L ESP32 Wireless Module SIM Antenna WiFi bluetooth Development Expand Board Devkit for Arduino

Parameter Datasheet Click here to openHardware Specifications Chipset MCURESSIF MCU32 240MHz Xtensa® single dual core 32 bit LX6 microprocessorFLASH QSPI flash 4MB PSRAM 8MBSRAM 520 kB SRAMButton ResetUSB to TTL CH9102F QFN24 CP2104 CH340KModular 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 7V 3 6VWorking current About 70mASleep current About 1 1mASIM card Only supports Nano SIM cardWorking temperature range 40℃ 85℃SizeWeight 78 83mm 28 92mm 8 06mm 11 77g Power Supply Specifications Power Supply USB 5V 1ACharging current 500mABattery 3 7V lithium batteryJST Connector 2Pin 1 25mmUSB Type CWi Fi Description Standard FCC CE RED IC TELEC KCC SRRC NCCProtocol 802 11 b g n 802 11n speed up to150Mbps A MPDU and A MSDU polymerization support 0 4μS Protection intervalFrequency range 2 4GHz 2 5GHz 2400M 2483 5M Transmit Power 22dBmCommunication distance 300mbluetooth Description Protocol meet bluetooth v4 2BR EDR and BLE standardRadio frequency with 97dBm sensitivity NZIF receiver Class 1 Class 2Class 3 emitter AFHAudio frequency CVSDSBC audio frequencySoftware Specification Wi Fi Mode Station SoftAP SoftAP Station P2PSecurity mechanism WPA WPA2 WPA2 Enterprise WPSEncryption Type AES RSA ECC SHAFirmware upgrade UART download OTA Through network host to download and write firmware Software Development Support cloud server developme