TTGO T-Call V1.4 ESP32 Wireless Module, 2.4GHz SIM800L Development Board

Description

Hardware Specifications Slices ESPRESSIF-ESP32 240MHz Xtensa® Single/Dual Core 32-bit LX6 Processor flash QSPI Flash 4MB/PSRAM 8MB SRAM 520 kB SRAM button Re USB to TT CP2104 or CH9102F QFN24 or CH340K interface modules UART, SPI, SDIO, I2C, PWM, I2S, ADC aboard an hour 40MHz Crystal Oscillator working voltage 2.7V-3.6V current work about 70mA current sleep about 1.1mA sim card Only supports nano SIM card Working temperature range -40℃~+85℃ size and weight 78.83mm * 28.92mm * 8.06mm (11.77g) power supply specifications Power supply USB 5V/1A charging current 500mA the battery 3.7V lithium battery JST connector 2Pin 2.0mm USB Type-C WIFI standard FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC (esp32 chip) protocol 802.11 b/g/n(802.11n, up to150Mbps acceleration) A-MPDU and A-MSDU polymerization, support 0.4μS protection interval Frequency range 2.4GHz ~ 2.5GHz (2400M ~ 2483.5M) The transfer of energy 22dBm communication distance 300m Bluetooth protocol Meet Bluetooth v4.2BR/EDR and BLE standard radio frequency With -97dBm sensitivity of NZIF Receiver Class 1, Class 2 and Class 3 AFH emitter sound frequency CVSD and SBC audio frequency Specification program wifi mode Terminal/SoftAP/SoftAP + Terminal/P2P security mechanism WPA/WPA2/WPA2-Enterprise/WPS Encoder type AES/RSA/ECC/SHA Firmware upgrade UART download/OTA (through network/host to download and write firmware) Software development Support cloud server/SDK development for user firmware development networking protocol IPv4、IPv6、SSL、TCP/UDP/HTTP/FTP/MQTT Configuration user AT+ instruction set, cloud server, Android/iOSapp OS FreeRTOS More information: https://github.com/Xinyuan-LilyGO/LilyGo-T-Call-SIM800 Connect the power supply, click to start, after starting, click to reset, double click to turn off. T-Call V1.4 Size Chart product details

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